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Rule Golden Hour

Golden Hour Forecast for Jökulsárlón Glacier Lagoon, Iceland

Iceland

Jökulsárlón holds drifting blue and white ice beneath Vatnajökull’s outlet glaciers. Changing ice shapes, reflections, dark moraine shores, and the narrow channel toward Diamond Beach continually alter the composition.

Currently

Real-time conditions
Low Cloud Cover27%
Mid Cloud Cover5%
High Cloud Cover100%
Sun Elevation5.0° (Golden hour)

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Atlantic/Reykjavik

No opportunities in the next 14 days

See which requirements block the most forecast hours below.

Most common blockers (95-hour forecast)

  • Precipitation Chance100% of hours
  • Golden Hour Potential92% of hours
  • Golden Hour75% of hours

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Golden Hour conditions across Iceland. The requirements and hourly values below show how those signals apply at Jökulsárlón Glacier Lagoon.

Explore Golden Hour conditions across Iceland →

Recorded match history

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

Last 30 days
28
recorded matching windows · 69% average confidence
Last 90 days
34
recorded matching windows · 69% average confidence
Last 365 days
101
recorded matching windows · 72% average confidence
Most represented month

August, with 20 of 101 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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95-hour requirements breakdown

When available, the detailed table below covers only the stated 95-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the next 14 days, so this table does not explain that entire 14-day period.

What passed or failed, hour by hour
0matching hours in the next 95 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time
Atlantic/Reykjavik
Golden Hour
Any
Golden Hour Potential
≥ 80.0%
Precipitation Chance
≤ 5.0%
Visibility
≥ 1000.0m
Fri, Aug 21
19:0067%0%24135m
20:0064%0%24135m
21:0064%0%24135m
22:0024%0%24135m
23:0021%0%24134m
Sat, Aug 22
24:009%0%24134m
01:0012%0%24135m
02:0011%0%24135m
03:0014%0%16010m
04:0045%0%12866m
05:0042%0%8975m
06:0046%0%8489m
07:0015%0%8429m
08:0020%0%8709m
09:0024%0%11484m
10:0017%13%11452m
11:0021%26%11364m
12:0024%39%11395m
13:0018%53%12273m
14:0015%67%11516m
15:0014%80%13446m
16:0014%87%14821m
17:009%93%9090m
18:009%99%8422m
19:0042%99%8482m
20:0038%100%8506m
21:0033%100%8506m
22:009%100%5747m
23:009%100%4435m
Sun, Aug 23
24:009%100%3392m
01:009%97%3378m
02:009%93%2723m
03:009%90%1884m
04:0026%90%1168m
05:0022%90%988m
06:0022%90%888m
07:009%93%709m
08:009%97%624m
09:009%100%1150m
10:0016%73%8718m
11:0015%46%11017m
12:0024%18%11866m
13:0021%39%11866m
14:0018%59%13431m
15:0018%80%11855m
16:0020%87%11347m
17:0017%93%11962m
18:009.6%100%14430m
19:0087%72%24134m
20:0089%44%24134m
21:0089%16%24134m
22:0029%33%24134m
23:0029%49%24134m
Mon, Aug 24
24:0027%66%24134m
01:0027%74%24134m
02:0027%83%24134m
03:0024%91%24135m
04:0065%94%24134m
05:0061%97%24134m
06:0049%100%21620m
07:0015%100%24134m
08:0014%100%23348m
09:0014%100%6256m
10:0011%100%3771m
11:0011%100%3246m
12:0011%100%2702m
13:009%90%2558m
14:009%80%1695m
15:009%71%218m
16:0012%75%191m
17:0011%79%191m
18:0012%84%153m
19:0022%70%223m
20:0021%57%326m
21:0014%44%919m
22:0012%50%1722m
23:0011%56%1423m
Tue, Aug 25
24:009%63%2159m
01:000%60%9484m
02:000%57%16809m
03:000%54%24135m
04:0096%52%24135m
05:0096%49%24135m
06:0097%46%24135m
07:000%46%24135m
08:000%45%24135m
09:000%44%24135m
10:000%50%24135m
11:000%55%24135m
12:000%60%24135m
13:000%64%24135m
14:000%68%24135m
15:000%71%24135m
16:000%76%24135m
17:000%81%24135m
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

What does Golden Hour Potential mean?

Inputs that drive the score

This derived score summarizes multiple raw weather signals. The table below shows the supporting inputs hour by hour, so you can see what's pushing the score up or down.

Time
Atlantic/Reykjavik
Golden Hour
High Clouds
%
Low Clouds
%
Mid-Level Clouds
%
Relative Humidity
%
Solar Elevation
°
Total Cloud Coverage
%
Wind Speed
m/s
Sat, Aug 22 Sunrise 05:18 Sunset 20:55
20:00
- 100% 27% 5% 89% 100% 6.1m/s
21:00
- 100% 99% 30% 92% -0.96° 100% 6.4m/s
22:00
- 100% 100% 10% 93% -6.4° 100% 5.9m/s
23:00
- 100% 100% 15% 95% -11° 100% 6.4m/s
Sun, Aug 23 Sunrise 05:21 Sunset 20:51
24:00
- 100% 100% 60% 95% -13° 100% 6.1m/s
01:00
- 100% 100% 14% 96% -14° 100% 6.2m/s
02:00
- 100% 100% 23% 96% -14° 100% 6.1m/s
03:00
- 100% 100% 0% 96% -11° 100% 5.4m/s
04:00
- 100% 100% 0% 96% -7.7° 100% 4.5m/s
05:00
- 100% 100% 2% 96% -2.6° 100% 3.7m/s
06:00
- 100% 100% 49% 96% 3.3° 100% 3.3m/s
07:00
- 51% 100% 0% 97% 9.5° 100% 3.3m/s
08:00
- 99% 99% 45% 96% 16° 99% 2.7m/s
09:00
- 100% 96% 8% 92% 22° 100% 1.8m/s
10:00
- 100% 89% 50% 90% 28° 100% 1.5m/s
11:00
- 18% 68% 8% 89% 33° 68% 2.5m/s
12:00
- 100% 25% 71% 85% 36° 100% 2.8m/s
13:00
- 100% 4% 100% 80% 37° 100% 2.6m/s
14:00
- 100% 2% 100% 77% 36° 100% 2.7m/s
15:00
- 1% 2% 94% 75% 34° 94% 3.1m/s
16:00
- 3% 1% 63% 73% 29° 63% 2.9m/s
17:00
- 63% 1% 0% 72% 24° 63% 2.8m/s
18:00
- 0% 1% 0% 72% 18° 1% 3.1m/s
19:00
- 0% 0% 0% 71% 11° 0% 3.2m/s
20:00
- 0% 0% 0% 69% 4.6° 0% 3.1m/s
21:00
- 0% 0% 0% 66% -1.4° 0% 3m/s
22:00
- 5% 0% 0% 62% -6.8° 5% 2.9m/s
23:00
- 100% 0% 5% 61% -11° 100% 2.5m/s
Mon, Aug 24 Sunrise 05:24 Sunset 20:48
24:00
- 100% 0% 0% 61% -14° 100% 2.2m/s
01:00
- 100% 0% 100% 62% -15° 100% 1.7m/s
02:00
- 100% 0% 71% 68% -14° 100% 0.8m/s
03:00
- 100% 0% 100% 75% -12° 100% 1.7m/s
04:00
- 91% 2% 6% 80% -8° 91% 3.7m/s
05:00
- 100% 42% 23% 86% -2.9° 100% 4m/s
06:00
- 100% 59% 100% 89% 100% 4.4m/s
07:00
- 100% 41% 100% 82% 9.2° 100% 4.3m/s
08:00
- 100% 100% 100% 78% 16° 100% 4.3m/s
09:00
- 100% 100% 100% 85% 22° 100% 4.9m/s
10:00
- 99% 100% 100% 91% 28° 100% 4.7m/s
11:00
- 100% 100% 100% 94% 32° 100% 4.5m/s
12:00
- 100% 100% 100% 94% 36° 100% 4.8m/s
13:00
- 100% 100% 100% 94% 37° 100% 5.7m/s
14:00
- 100% 100% 100% 97% 36° 100% 5.9m/s
15:00
- 100% 100% 99% 99% 33° 100% 5.5m/s
16:00
- 3% 100% 97% 99% 29° 100% 5.4m/s
17:00
- 0% 100% 100% 99% 23° 100% 7.7m/s
18:00
- 1% 100% 100% 99% 17° 100% 8.2m/s
19:00
- 2% 100% 100% 99% 11° 100% 6.8m/s
20:00
- 5% 100% 100% 99% 4.3° 100% 6.8m/s
21:00
- 0% 100% 99% 97% -1.7° 100% 7.3m/s
22:00
- 5% 100% 12% 94% -7.1° 100% 7.7m/s
23:00
- 35% 100% 14% 93% -11° 100% 7.2m/s
Tue, Aug 25 Sunrise 05:27 Sunset 20:44
24:00
- 5% 97% 2% 92% -14° 97% 7.7m/s
01:00
- 3% 67% 2% 92% -15° 67% 5.4m/s
02:00
- 2% 37% 1% 91% -14° 37% 3.1m/s
03:00
- 0% 6% 0% 91% -12° 6% 0.81m/s
04:00
- 0% 6% 0% 91% -8.3° 6% 1.1m/s
05:00
- 0% 6% 0% 90% -3.2° 6% 1.4m/s
06:00
- 0% 6% 0% 90% 2.8° 6% 1.7m/s
07:00
- 2% 5% 0% 89% 6% 2m/s
08:00
- 3% 3% 0% 89% 15° 6% 2.3m/s
09:00
- 5% 1% 0% 88% 22° 5% 2.6m/s
10:00
- 33% 1% 0% 88% 27° 33% 2.6m/s
11:00
- 61% 1% 0% 88% 32° 61% 2.6m/s
12:00
- 88% 1% 0% 88% 35° 88% 2.7m/s
13:00
- 88% 26% 33% 87% 37° 92% 2.7m/s
14:00
- 87% 51% 66% 87% 36° 96% 2.7m/s
15:00
- 87% 75% 100% 86% 33° 100% 2.7m/s
16:00
- 91% 82% 100% 83% 29° 100% 2.8m/s
17:00
- 96% 88% 100% 79% 23° 100% 2.9m/s
18:00
- 100% 94% 100% 76% 17° 100% 3.1m/s
19:00
- 100% 95% 89% 77% 10° 100% 3.2m/s
How to read: these inputs help produce the derived score; they are not requirements by themselves.

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.

Forecast generated

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