Mirror Lake Forecast for Helsinki, Southern Finland
Granite shores, low Baltic islands, Suomenlinna’s fortifications, and neoclassical waterfront buildings give Helsinki varied maritime foregrounds.
Upcoming Opportunities
When all conditions match, PhotoWeather marks an opportunity window.
No opportunities in the next 14 days
See which requirements block the most forecast hours below.
Most common blockers (95-hour forecast)
- Wind Speed97% of hours
- Wind Gusts89% of hours
- Precipitation Chance72% of hours
How this forecast is evaluated
See which weather signals PhotoWeather uses to identify Mirror Lake conditions across Southern Finland. The requirements and hourly values below show how those signals apply at Helsinki.
Explore Mirror Lake conditions across Southern Finland →Recorded match history
Completed PhotoWeather forecast matches recorded for this exact rule at Helsinki during the last 365 days.
February, with 13 of 42 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.
Time Europe/Helsinki | Wind Speed ≤ 1.0m/s | Wind Gusts ≤ 2.0m/s | Precipitation Chance ≤ 10.0% | Visibility ≥ 5000.0m |
|---|---|---|---|---|
| Mon, Aug 17 | ||||
| 17:00 | 4m/s | 7.8m/s | 50% | 24134m |
| 18:00 | 3.7m/s | 7.2m/s | 43% | 24135m |
| 19:00 | 3.4m/s | 6.8m/s | 42% | 24135m |
| 20:00 | 3.3m/s | 7.1m/s | 40% | 24135m |
| 21:00 | 3.5m/s | 7.9m/s | 39% | 24135m |
| 22:00 | 2.7m/s | 7.8m/s | 38% | 24134m |
| 23:00 | 3m/s | 8.7m/s | 19% | 24134m |
| Tue, Aug 18 | ||||
| 24:00 | 3m/s | 8.2m/s | 0% | 24134m |
| 01:00 | 3m/s | 7.6m/s | 7.4% | 24134m |
| 02:00 | 2.9m/s | 6.9m/s | 15% | 24134m |
| 03:00 | 3m/s | 6.9m/s | 22% | 24134m |
| 04:00 | 2.6m/s | 6.4m/s | 3.3% | 24135m |
| 05:00 | 2.5m/s | 5.2m/s | 6.7% | 24134m |
| 06:00 | 2.2m/s | 4.1m/s | 10% | 24134m |
| 07:00 | 1.8m/s | 3.7m/s | 14% | 24135m |
| 08:00 | 1.6m/s | 2.9m/s | 18% | 24135m |
| 09:00 | 1.5m/s | 2.5m/s | 22% | 24135m |
| 10:00 | 1.8m/s | 2.7m/s | 0% | 24134m |
| 11:00 | 2.2m/s | 2.6m/s | 0% | 24135m |
| 12:00 | 2.6m/s | 2.7m/s | 0% | 24135m |
| 13:00 | 3.4m/s | 3.3m/s | 13% | 24135m |
| 14:00 | 3.9m/s | 3.6m/s | 26% | 24134m |
| 15:00 | 3.5m/s | 4.1m/s | 39% | 24135m |
| 16:00 | 3.5m/s | 3.9m/s | 26% | 24135m |
| 17:00 | 2.6m/s | 3.7m/s | 13% | 24135m |
| 18:00 | 2m/s | 2.4m/s | 0% | 24135m |
| 19:00 | 1.7m/s | 2.3m/s | 0% | 24135m |
| 20:00 | 1.3m/s | 1.4m/s | 0% | 24134m |
| 21:00 | 2.1m/s | 2.3m/s | 0% | 24135m |
| 22:00 | 3m/s | 6.5m/s | 0% | 24135m |
| 23:00 | 2.8m/s | 6m/s | 0% | 24134m |
| Wed, Aug 19 | ||||
| 24:00 | 2.8m/s | 6.1m/s | 0% | 24134m |
| 01:00 | 2.6m/s | 5.2m/s | 0% | 24135m |
| 02:00 | 2.6m/s | 4.6m/s | 0% | 24135m |
| 03:00 | 2.5m/s | 4.2m/s | 0% | 24134m |
| 04:00 | 2.5m/s | 4.4m/s | 0% | 24134m |
| 05:00 | 2.6m/s | 4.5m/s | 0% | 24135m |
| 06:00 | 2.8m/s | 5.8m/s | 0% | 24134m |
| 07:00 | 3m/s | 7.3m/s | 7.4% | 24134m |
| 08:00 | 3.4m/s | 6.8m/s | 15% | 24134m |
| 09:00 | 3.2m/s | 5.5m/s | 22% | 24135m |
| 10:00 | 3.3m/s | 4.7m/s | 15% | 24135m |
| 11:00 | 3.2m/s | 4.1m/s | 7.4% | 24134m |
| 12:00 | 3m/s | 4m/s | 0% | 24134m |
| 13:00 | 3.3m/s | 4.3m/s | 7.4% | 24135m |
| 14:00 | 3.7m/s | 4.9m/s | 15% | 24134m |
| 15:00 | 4.4m/s | 5.6m/s | 22% | 24135m |
| 16:00 | 5.5m/s | 6.6m/s | 15% | 24134m |
| 17:00 | 6.3m/s | 7.3m/s | 7.4% | 24134m |
| 18:00 | 5.5m/s | 6.7m/s | 0% | 24135m |
| 19:00 | 4.8m/s | 6.3m/s | 7.4% | 24135m |
| 20:00 | 4.6m/s | 8.5m/s | 15% | 24134m |
| 21:00 | 3.2m/s | 7.8m/s | 22% | 24134m |
| 22:00 | 3m/s | 8m/s | 22% | 24134m |
| 23:00 | 2.9m/s | 7.1m/s | 22% | 24134m |
| Thu, Aug 20 | ||||
| 24:00 | 2.8m/s | 6.6m/s | 22% | 24134m |
| 01:00 | 2.7m/s | 6.3m/s | 48% | 24135m |
| 02:00 | 2.6m/s | 5.7m/s | 74% | 24134m |
| 03:00 | 2.5m/s | 4.5m/s | 100% | 24135m |
| 04:00 | 2.3m/s | 3.3m/s | 74% | 24134m |
| 05:00 | 1.9m/s | 2m/s | 47% | 24134m |
| 06:00 | 1.6m/s | 1.6m/s | 21% | 24134m |
| 07:00 | 1.3m/s | 1.3m/s | 25% | 24134m |
| 08:00 | 1m/s | 1.4m/s | 30% | 24135m |
| 09:00 | 0.92m/s | 1.1m/s | 34% | 24134m |
| 10:00 | 0.74m/s | 0.73m/s | 32% | 24134m |
| 11:00 | 1.3m/s | 0.8m/s | 31% | 24134m |
| 12:00 | 2m/s | 1.3m/s | 30% | 24134m |
| 13:00 | 3.1m/s | 2.7m/s | 32% | 24135m |
| 14:00 | 3.5m/s | 3.4m/s | 35% | 24135m |
| 15:00 | 4m/s | 5.3m/s | 37% | 21255m |
| 16:00 | 2.7m/s | 5.5m/s | 36% | 15050m |
| 17:00 | 2m/s | 4.5m/s | 34% | 22474m |
| 18:00 | 2.1m/s | 4.4m/s | 32% | 8090m |
| 19:00 | 1.8m/s | 3.6m/s | 37% | 11038m |
| 20:00 | 1.8m/s | 3m/s | 41% | 24135m |
| 21:00 | 2.4m/s | 4m/s | 46% | 24134m |
| 22:00 | 2.6m/s | 4m/s | 45% | 24134m |
| 23:00 | 2.8m/s | 3.9m/s | 45% | 24135m |
| Fri, Aug 21 | ||||
| 24:00 | 3m/s | 3.9m/s | 44% | 24135m |
| 01:00 | 4.6m/s | 5.4m/s | 44% | 24135m |
| 02:00 | 6.1m/s | 6.9m/s | 44% | 24135m |
| 03:00 | 7.7m/s | 8.3m/s | 44% | 24135m |
| 04:00 | 7.8m/s | 8.6m/s | 47% | 20430m |
| 05:00 | 8m/s | 8.9m/s | 50% | 16726m |
| 06:00 | 8.1m/s | 9.2m/s | 52% | 13021m |
| 07:00 | 7.6m/s | 8.6m/s | 62% | 10285m |
| 08:00 | 7.1m/s | 7.9m/s | 71% | 7548m |
| 09:00 | 6.6m/s | 7.2m/s | 80% | 4812m |
| 10:00 | 5.7m/s | 6.1m/s | 71% | 11253m |
| 11:00 | 4.7m/s | 4.9m/s | 62% | 17694m |
| 12:00 | 3.8m/s | 3.7m/s | 52% | 24135m |
| 13:00 | 4.3m/s | 4.9m/s | 51% | 23138m |
| 14:00 | 4.9m/s | 6.1m/s | 49% | 22140m |
| 15:00 | 5.5m/s | 7.3m/s | 47% | 21143m |
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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