Rule
Blue Hour
Blue Hour in Santorini
Oia, Greece
When city lights balance with the deep blue twilight sky
No opportunities right now
Here’s what usually blocks matches
No blue hour conditions predicted. The famous white buildings need clear twilight skies for that deep blue backdrop.
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Rule requirements (key thresholds)
Blue Hour · Any Total Cloud Coverage · ≤ 50.0% Wind Speed · ≤ 6.0m/s Precipitation Chance · ≤ 15.0%
Tip: Scroll down to the 72-hour table to see exactly which condition fails hour by hour.
Most common blockers (next 72 hours)
Blue Hour 92% failing
Wind Speed 88% failing
Total Cloud Coverage 68% failing
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
Times shown in Europe/Athens
No opportunities in the next 14 days
See the blocker timeline above to understand which conditions are preventing matches.
What this forecast looks for
Plain-language explanation from the ruleBlue Hour conditions for city lights balanced with twilight sky:
- Blue Hour Period: The magical time after sunset/before sunrise
- Cloud Cover: Partial clouds add interest without blocking the sky
- Visibility: Good visibility for urban details
- Precipitation: Dry conditions for clear shots
The deep blue sky provides perfect contrast with warm city lights.
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72-hour requirements breakdown
What passed or failed, hour by hour0matching hours in the next 72 hours
AND logic: all conditions required
Meets requirement
Misses requirement
Time Europe/Athens | Blue Hour Any | Total Cloud Coverage ≤ 50.0% | Wind Speed ≤ 6.0m/s | Precipitation Chance ≤ 15.0% | Visibility ≥ 10000.0m |
|---|---|---|---|---|---|
| Fri, Jan 9 | |||||
| 08:00 | ✕ | 36% | 8.4m/s | 0% | 74640m |
| 09:00 | ✕ | 32% | 8m/s | 0% | 74620m |
| 10:00 | ✕ | 31% | 7.8m/s | 0% | 74720m |
| 11:00 | ✕ | 0% | 7.1m/s | 0% | 75480m |
| 12:00 | ✕ | 0% | 6.3m/s | 0% | 76400m |
| 13:00 | ✕ | 25% | 6.7m/s | 0% | 72400m |
| 14:00 | ✕ | 0% | 6.1m/s | 0% | 75300m |
| 15:00 | ✕ | 31% | 6m/s | 0% | 72480m |
| 16:00 | ✕ | 85% | 7.7m/s | 3% | 59220m |
| 17:00 | ✓ | 76% | 8.2m/s | 5% | 48420m |
| 18:00 | ✕ | 78% | 7.2m/s | 23% | 48060m |
| 19:00 | ✕ | 76% | 8.5m/s | 35% | 48320m |
| 20:00 | ✕ | 71% | 8.4m/s | 15% | 43620m |
| 21:00 | ✕ | 59% | 8.7m/s | 8% | 46440m |
| 22:00 | ✕ | 53% | 8.7m/s | 0% | 40280m |
| 23:00 | ✕ | 43% | 8.8m/s | 0% | 36840m |
| Sat, Jan 10 | |||||
| 24:00 | ✕ | 64% | 8.7m/s | 13% | 31800m |
| 01:00 | ✕ | 53% | 8.5m/s | 13% | 30920m |
| 02:00 | ✕ | 70% | 8.9m/s | 33% | 31280m |
| 03:00 | ✕ | 66% | 9.5m/s | 35% | 35860m |
| 04:00 | ✕ | 73% | 9.3m/s | 33% | 49720m |
| 05:00 | ✕ | 48% | 10m/s | 15% | 51800m |
| 06:00 | ✕ | 50% | 10m/s | 13% | 41860m |
| 07:00 | ✓ | 54% | 10m/s | 10% | 47000m |
| 08:00 | ✕ | 57% | 10m/s | 3% | 45040m |
| 09:00 | ✕ | 99% | 10m/s | 10% | 45080m |
| 10:00 | ✕ | 91% | 11m/s | 10% | 47020m |
| 11:00 | ✕ | 77% | 11m/s | 15% | 48380m |
| 12:00 | ✕ | 46% | 11m/s | 13% | 43560m |
| 13:00 | ✕ | 54% | 11m/s | 18% | 48220m |
| 14:00 | ✕ | 46% | 11m/s | 13% | 51260m |
| 15:00 | ✕ | 43% | 11m/s | 8% | 57220m |
| 16:00 | ✕ | 32% | 10m/s | 8% | 57080m |
| 17:00 | ✓ | 34% | 10m/s | 5% | 54140m |
| 18:00 | ✕ | 12% | 9.8m/s | 15% | 55820m |
| 19:00 | ✕ | 3% | 9.8m/s | 15% | 58640m |
| 20:00 | ✕ | 61% | 11m/s | 13% | 47640m |
| 21:00 | ✕ | 65% | 11m/s | 45% | 42260m |
| 22:00 | ✕ | 75% | 10m/s | 65% | 31120m |
| 23:00 | ✕ | 83% | 9.9m/s | 63% | 24920m |
| Sun, Jan 11 | |||||
| 24:00 | ✕ | 100% | 9.3m/s | 70% | 16940m |
| 01:00 | ✕ | 100% | 9m/s | 65% | 13920m |
| 02:00 | ✕ | 100% | 8.7m/s | 70% | 19240m |
| 03:00 | ✕ | 99% | 8.7m/s | 68% | 26300m |
| 04:00 | ✕ | 100% | 8.7m/s | 65% | 18160m |
| 05:00 | ✕ | 100% | 8.4m/s | 63% | 16440m |
| 06:00 | ✕ | 100% | 7.9m/s | 64% | 25500m |
| 07:00 | ✓ | 100% | 8.6m/s | 66% | 28300m |
| 08:00 | ✕ | 90% | 8m/s | 68% | 51760m |
| 09:00 | ✕ | 67% | 8.7m/s | 69% | 39520m |
| 10:00 | ✕ | 63% | 8.8m/s | 71% | 41880m |
| 11:00 | ✕ | 48% | 9.3m/s | 73% | 53580m |
| 12:00 | ✕ | 81% | 10m/s | 80% | 25580m |
| 13:00 | ✕ | 100% | 10m/s | 87% | 37960m |
| 14:00 | ✕ | 100% | 9.3m/s | 88% | 40340m |
| 15:00 | ✕ | 100% | 9.2m/s | 74% | 47900m |
| 16:00 | ✕ | 98% | 9.1m/s | 53% | 48440m |
| 17:00 | ✓ | 59% | 8.5m/s | 38% | 48160m |
| 18:00 | ✕ | 52% | 8.4m/s | 34% | 57240m |
| 19:00 | ✕ | 58% | 7.4m/s | 37% | 56680m |
| 20:00 | ✕ | 90% | 6.7m/s | 40% | 71040m |
| 21:00 | ✕ | 57% | 6.7m/s | 44% | 69240m |
| 22:00 | ✕ | 95% | 5.8m/s | 50% | 58800m |
| 23:00 | ✕ | 99% | 6.3m/s | 53% | 51640m |
| Mon, Jan 12 | |||||
| 24:00 | ✕ | 100% | 6m/s | 42% | 49940m |
| 01:00 | ✕ | 44% | 5.1m/s | 44% | 42760m |
| 02:00 | ✕ | 46% | 5.7m/s | 45% | 47860m |
| 03:00 | ✕ | 49% | 5.7m/s | 45% | 32320m |
| 04:00 | ✕ | 56% | 5.2m/s | 44% | 29800m |
| 05:00 | ✕ | 72% | 5.9m/s | 43% | 39520m |
| 06:00 | ✕ | 56% | 5.9m/s | 42% | 47520m |
| 07:00 | ✓ | 46% | 6.2m/s | 40% | 52920m |
How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).
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