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Rule Blue Hour

Blue Hour Forecast for Lewes, London & Southeast England

Lewes, England, United Kingdom

Lewes sits between chalk ridges beside the River Ouse, pairing castle ruins and tiled rooftops with floodplain curves and open downland.

3 matching opportunities in the 14-day forecast.

Hourly forecast scores

Forecast valid from Oct 7, 2026, 11:00 PM UTC (one hour; not an observation)
Cloud Cover5%
Moon Illumination12%
Moon Altitude-30.5°

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Europe/London
blue-hour weather icon
First upcoming window
Good Blue Hour (clear) at Sunrise
Lewes
Thu, Oct 8 · 06:38–06:50 · 1h window
Medium confidence
66%
🌉Blue Hour Quality66.8%
Cloud Cover: 1%
Moon Illumination: 5%
Moon Altitude: 13.9°
blue-hour weather icon
Good Blue Hour (clear) at Sunrise
Lewes
Sun, Oct 11 · 06:42–06:55
🌉Blue Hour Quality:67%
Medium
blue-hour weather icon
Good Blue Hour (clear) at Dawn
Lewes
Wed, Oct 21 · 06:58–07:00
🌉Blue Hour Quality:70.5%
Low

72-hour requirements breakdown

When available, this detailed table covers only the stated 72-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the full 14-day forecast period, so this table does not explain that entire period. Times shown in Europe/London.

Most common blockers

Ranked across the 95-hour forecast horizon, not the full opportunity period.

  • Blue Hour Quality99% of hours
  • Blue Hour92% of hours
  • Precipitation Chance24% of hours
1matching hours in the displayed 72-hour forecastJump to first displayed match
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Europe/London
Blue Hour
Any
Blue Hour Quality
≥ 65.0%
Precipitation Chance
≤ 15.0%
Thu, Oct 8
Rule fails. 24:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 1%. Meets requirement
Rule fails. 01:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 02:00Blue Hour: No. Misses requirementBlue Hour Quality: 26%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 03:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 04:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 05:00Blue Hour: No. Misses requirementBlue Hour Quality: 25%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule passes. 06:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 67%. Meets requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 07:00Blue Hour: No. Misses requirementBlue Hour Quality: 48%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 08:00Blue Hour: No. Misses requirementBlue Hour Quality: 21%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 09:00Blue Hour: No. Misses requirementBlue Hour Quality: 25%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 10:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 11:00Blue Hour: No. Misses requirementBlue Hour Quality: 28%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 12:00Blue Hour: No. Misses requirementBlue Hour Quality: 32%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 13:00Blue Hour: No. Misses requirementBlue Hour Quality: 28%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 14:00Blue Hour: No. Misses requirementBlue Hour Quality: 28%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 15:00Blue Hour: No. Misses requirementBlue Hour Quality: 32%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 16:00Blue Hour: No. Misses requirementBlue Hour Quality: 30%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 17:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 18:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 58%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 19:00Blue Hour: No. Misses requirementBlue Hour Quality: 63%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 20:00Blue Hour: No. Misses requirementBlue Hour Quality: 30%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 21:00Blue Hour: No. Misses requirementBlue Hour Quality: 31%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 22:00Blue Hour: No. Misses requirementBlue Hour Quality: 31%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 23:00Blue Hour: No. Misses requirementBlue Hour Quality: 18%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Fri, Oct 9
Rule fails. 24:00Blue Hour: No. Misses requirementBlue Hour Quality: 21%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 01:00Blue Hour: No. Misses requirementBlue Hour Quality: 17%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 02:00Blue Hour: No. Misses requirementBlue Hour Quality: 15%. Misses requirementPrecipitation Chance: 16%. Misses requirement
Rule fails. 03:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 37%. Misses requirement
Rule fails. 04:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 51%. Misses requirement
Rule fails. 05:00Blue Hour: No. Misses requirementBlue Hour Quality: 15%. Misses requirementPrecipitation Chance: 51%. Misses requirement
Rule fails. 06:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 26%. Misses requirementPrecipitation Chance: 43%. Misses requirement
Rule fails. 07:00Blue Hour: No. Misses requirementBlue Hour Quality: 24%. Misses requirementPrecipitation Chance: 33%. Misses requirement
Rule fails. 08:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 22%. Misses requirement
Rule fails. 09:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 9%. Meets requirement
Rule fails. 10:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 2%. Meets requirement
Rule fails. 11:00Blue Hour: No. Misses requirementBlue Hour Quality: 13%. Misses requirementPrecipitation Chance: 2%. Meets requirement
Rule fails. 12:00Blue Hour: No. Misses requirementBlue Hour Quality: 14%. Misses requirementPrecipitation Chance: 7%. Meets requirement
Rule fails. 13:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.8%. Misses requirementPrecipitation Chance: 16%. Misses requirement
Rule fails. 14:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.8%. Misses requirementPrecipitation Chance: 32%. Misses requirement
Rule fails. 15:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.9%. Misses requirementPrecipitation Chance: 52%. Misses requirement
Rule fails. 16:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.7%. Misses requirementPrecipitation Chance: 69%. Misses requirement
Rule fails. 17:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.4%. Misses requirementPrecipitation Chance: 83%. Misses requirement
Rule fails. 18:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 21%. Misses requirementPrecipitation Chance: 93%. Misses requirement
Rule fails. 19:00Blue Hour: No. Misses requirementBlue Hour Quality: 63%. Misses requirementPrecipitation Chance: 92%. Misses requirement
Rule fails. 20:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 72%. Misses requirement
Rule fails. 21:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 41%. Misses requirement
Rule fails. 22:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 16%. Misses requirement
Rule fails. 23:00Blue Hour: No. Misses requirementBlue Hour Quality: 27%. Misses requirementPrecipitation Chance: 6%. Meets requirement
Sat, Oct 10
Rule fails. 24:00Blue Hour: No. Misses requirementBlue Hour Quality: 24%. Misses requirementPrecipitation Chance: 2%. Meets requirement
Rule fails. 01:00Blue Hour: No. Misses requirementBlue Hour Quality: 25%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 02:00Blue Hour: No. Misses requirementBlue Hour Quality: 25%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 03:00Blue Hour: No. Misses requirementBlue Hour Quality: 17%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 04:00Blue Hour: No. Misses requirementBlue Hour Quality: 16%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 05:00Blue Hour: No. Misses requirementBlue Hour Quality: 17%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 06:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 57%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 07:00Blue Hour: No. Misses requirementBlue Hour Quality: 51%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 08:00Blue Hour: No. Misses requirementBlue Hour Quality: 3.2%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 09:00Blue Hour: No. Misses requirementBlue Hour Quality: 3.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 10:00Blue Hour: No. Misses requirementBlue Hour Quality: 3.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 11:00Blue Hour: No. Misses requirementBlue Hour Quality: 3%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 12:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.8%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 13:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 14:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 15:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 16:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.4%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 17:00Blue Hour: No. Misses requirementBlue Hour Quality: 2.2%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 18:00Blue Hour: Yes. Meets requirementBlue Hour Quality: 40%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 19:00Blue Hour: No. Misses requirementBlue Hour Quality: 35%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 20:00Blue Hour: No. Misses requirementBlue Hour Quality: 6.9%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 21:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.5%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 22:00Blue Hour: No. Misses requirementBlue Hour Quality: 11%. Misses requirementPrecipitation Chance: 0%. Meets requirement
Rule fails. 23:00Blue Hour: No. Misses requirementBlue Hour Quality: 9.7%. Misses requirementPrecipitation Chance: 0%. Meets requirement
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

Supporting forecast inputs

Additional hourly values for interpreting the forecast and any derived scores. See the separate requirements breakdown for rule logic; missing values are unavailable.

Forecast time (Europe/London)Blue HourHigh CloudsLow CloudsMid-Level CloudsRelative HumiditySolar ElevationTotal Cloud CoverageVisibilityWind Speed
Thu, Oct 8, 2026Sunrise · Sunset
NightUnavailable0%5%0%80%-44°5%30420m4.9m/s
NightUnavailable0%0%0%80%-45°0%32760m5m/s
NightUnavailable0%20%0%80%-42°20%33460m4.8m/s
NightUnavailable0%0%0%83%-37°0%29040m4.5m/s
NightUnavailable0%2%0%85%-30°2%29420m5m/s
NightUnavailable0%22%0%86%-21°22%30640m4.1m/s
NightUnavailable0%1%0%86%-12°1%32100m4.9m/s
NightUnavailable0%0%0%87%-2.5°0%30060m4.6m/s
Unavailable0%11%0%86%6.7°11%29560m4.2m/s
Unavailable0%0%0%80%15°0%30640m4.5m/s
Unavailable0%0%0%72%23°0%34160m5.1m/s
Unavailable0%0%0%67%29°0%34300m5.6m/s
Unavailable0%20%0%56%32°20%40240m5.3m/s
Unavailable0%12%0%48%33°12%43000m4.9m/s
Unavailable0%2%0%42%31°2%44200m4.8m/s
Unavailable0%10%0%41%26°10%43960m4.6m/s
Unavailable0%7%0%40%20°7%42640m4m/s
Unavailable0%49%0%46%12°50%41060m2.7m/s
Unavailable0%69%0%54%2.9°69%37760m2.4m/s
NightUnavailable0%39%0%60%-6.7°39%37000m2.8m/s
NightUnavailable0%82%0%62%-16°82%34060m2.6m/s
NightUnavailable100%8%0%65%-25°100%28360m2.6m/s
NightUnavailable100%10%52%63%-33°100%26760m3.4m/s
NightUnavailable13%0%100%63%-40°100%31880m3.5m/s
Fri, Oct 9, 2026Sunrise · Sunset
NightUnavailable91%1%100%63%-44°100%28040m3.4m/s
NightUnavailable100%75%100%74%-45°100%26760m2.4m/s
NightUnavailable100%100%100%85%-43°100%35160m2.9m/s
NightUnavailable100%99%100%95%-38°100%7360m5.7m/s
NightUnavailable0%100%100%96%-30°100%8500m7.1m/s
NightUnavailable100%99%0%93%-22°100%25580m7m/s
NightUnavailable0%80%0%94%-12°94%27860m6.8m/s
NightUnavailable100%74%16%91%-2.8°100%28040m6.6m/s
Unavailable100%70%0%91%6.5°100%27420m6.8m/s
Unavailable100%70%0%89%15°100%27140m6.4m/s
Unavailable100%63%100%86%22°100%30960m7.1m/s
Unavailable100%77%100%82%28°100%32880m8m/s
Unavailable0%28%100%79%32°100%26160m7.8m/s
Unavailable0%75%90%79%33°98%37260m9m/s
Unavailable73%60%100%77%31°100%36980m9.3m/s
Unavailable0%87%2%81%26°88%35200m9.9m/s
Unavailable0%100%66%84%19°100%28460m9.5m/s
Unavailable0%94%97%87%11°100%19360m8.9m/s
Unavailable0%82%55%92%2.6°92%6040m7.5m/s
NightUnavailable0%2%0%83%-7°2%36160m7.1m/s
NightUnavailable0%0%0%79%-16°0%35880m5.8m/s
NightUnavailable0%0%0%79%-26°0%37240m4.3m/s
NightUnavailable0%0%0%78%-34°0%37120m4.9m/s
NightUnavailable0%0%0%82%-40°0%32330m4.2m/s
Sat, Oct 10, 2026Sunrise · Sunset
NightUnavailable0%0%0%84%-45°0%28250m4m/s
NightUnavailable0%0%0%86%-46°0%25295m4m/s
NightUnavailable0%0%0%88%-43°0%20680m3.9m/s
NightUnavailable0%0%0%87%-38°0%20900m4.1m/s
NightUnavailable0%0%0%87%-30°0%21120m4.3m/s
NightUnavailable0%0%0%88%-22°0%21100m4.3m/s
NightUnavailable0%0%0%88%-13°0%21080m4.2m/s
NightUnavailable0%0%0%88%-3°0%21060m4.2m/s
Unavailable0%0%0%86%6.2°0%21980m4.4m/s
Unavailable0%0%0%82%15°0%22880m4.8m/s
Unavailable0%0%0%77%22°0%23800m5.2m/s
Unavailable0%3%10%69%28°13%23360m5.7m/s
Unavailable0%8%25%61%32°31%22940m6.3m/s
Unavailable0%14%36%54%32°44%22500m6.6m/s
Unavailable0%20%43%51%30°46%23300m6.6m/s
Unavailable0%26%46%51%26°44%24080m6.4m/s
Unavailable0%34%44%51%19°44%24880m6.1m/s
Unavailable0%49%32%51%11°55%24900m5.6m/s
Unavailable0%67%13%52%2.3°69%24900m4.9m/s
NightUnavailable0%72%0%54%-7.3°72%24920m4.4m/s
NightUnavailable0%54%0%57%-17°52%25100m4.2m/s
NightUnavailable0%24%0%60%-26°21%25300m4.1m/s
NightUnavailable0%2%0%63%-34°2%25480m4.1m/s
NightUnavailable0%0%15%65%-41°11%25300m4.1m/s

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Blue Hour conditions across London & Southeast England. The requirements and hourly values above show how those signals apply at Lewes.

Explore Blue Hour conditions across London & Southeast England →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Lewes during the last 365 days.

Last 30 days
25
recorded matching windows · 76% average confidence
Last 90 days
81
recorded matching windows · 76% average confidence
Last 365 days
165
recorded matching windows · 74% average confidence
Most frequent recorded start hour

21:00 local time, shared by 41 of 165 matches recorded in the last 365 days.

Most represented month

July, with 37 of 165 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

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