5-day weather forecast Helsinki 12-05-2026
Weather forecast Helsinki Tuesday, May 12 12.05.2026: patchy rain possible, temperature from 6 °C to 12 °C.
Precipitation probability 77%. Wind up to 5.61 m/s (gusts 9.31 m/s). Air humidity 69–98%, atmospheric pressure 747–755 mm Hg, UV index up to 3.
Sunrise 04:49
Sunset 21:46
Sunset 21:46
Waning Crescent29% illuminated
Moonrise 03:43 · Moonset 15:23
Moonrise 03:43 · Moonset 15:23
Chart
Table
Tue, May 12, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Partly cloudy | 7 °C | 0% | 47% | 86% | 755 mm Hg | E 82° 3.61 (7.56) m/s | 0 |
| 01:00 | Partly cloudy | 6 °C | 0% | 38% | 90% | 754 mm Hg | E 96° 4.19 (8.83) m/s | 0 |
| 02:00 | Partly cloudy | 6 °C | 0% | 39% | 89% | 754 mm Hg | ESE 105° 3.89 (8.19) m/s | 0 |
| 03:00 |  Clear | 7 °C | 0% | 20% | 87% | 753 mm Hg | ESE 108° 3.81 (7.97) m/s | 0 |
| 04:00 | Clear | 7 °C | 0% | 13% | 85% | 753 mm Hg | ESE 111° 3.89 (8.06) m/s | 0 |
| 05:00 |  Sunny | 7 °C | 0% | 14% | 89% | 752 mm Hg | ESE 112° 3.81 (7.97) m/s | 0 |
| 06:00 | Sunny | 6 °C | 0% | 15% | 90% | 752 mm Hg | ESE 116° 3.69 (7.78) m/s | 0.1 |
| 07:00 | Sunny | 8 °C | 0% | 8% | 83% | 752 mm Hg | ESE 118° 4.19 (7.72) m/s | 0.2 |
| 08:00 |  Cloudy | 9 °C | 0% | 82% | 77% | 752 mm Hg | ESE 123° 4.69 (8) m/s | 0.2 |
| 09:00 |  Overcast | 9 °C | 0% | 100% | 75% | 752 mm Hg | ESE 120° 5 (8.14) m/s | 0.4 |
| 10:00 |  Partly cloudy | 10 °C | 0% | 48% | 76% | 751 mm Hg | ESE 116° 5.19 (8.22) m/s | 0.8 |
| 11:00 | Partly cloudy | 10 °C | 0% | 51% | 78% | 750 mm Hg | ESE 107° 5.31 (8.25) m/s | 1.1 |
| 12:00 | Overcast | 11 °C | 0% | 93% | 76% | 750 mm Hg | ESE 106° 5.5 (8.53) m/s | 2.4 |
| 13:00 | Cloudy | 11 °C | 0% | 79% | 74% | 750 mm Hg | ESE 105° 5.31 (8.67) m/s | 1.3 |
| 14:00 | Overcast | 11 °C | 0% | 100% | 71% | 749 mm Hg | ESE 105° 5.5 (9.08) m/s | 1.8 |
| 15:00 |  Patchy rain possible | 12 °C | 77% (0.01 mm/hr) | 100% | 69% | 749 mm Hg | ESE 105° 5.61 (9.31) m/s | 1.2 |
| 16:00 | Patchy rain possible | 11 °C | 100% (0.14 mm/hr) | 100% | 74% | 749 mm Hg | ESE 103° 5.31 (9) m/s | 3 |
| 17:00 | Patchy rain possible | 10 °C | 100% (0.09 mm/hr) | 100% | 80% | 749 mm Hg | ESE 104° 4.39 (7.67) m/s | 2 |
| 18:00 |  Light drizzle | 9 °C | 100% (0.47 mm/hr) | 83% | 83% | 748 mm Hg | ESE 119° 4.31 (7.11) m/s | 2 |
| 19:00 | Light drizzle | 8 °C | 100% (0.58 mm/hr) | 100% | 94% | 748 mm Hg | ESE 103° 3.39 (6.17) m/s | 2 |
| 20:00 | Light drizzle | 7 °C | 100% (0.56 mm/hr) | 100% | 96% | 747 mm Hg | E 99° 3.11 (5.81) m/s | 2 |
| 21:00 | Patchy rain possible | 9 °C | 100% (0.12 mm/hr) | 100% | 98% | 749 mm Hg | SE 146° 0 (0) m/s | 2 |
| 22:00 |  Light rain | 8 °C | 100% (0.4 mm/hr) | 100% | 96% | 749 mm Hg | S 183° 1.89 (2.69) m/s | 0 |
| 23:00 |  Patchy rain possible | 7 °C | 100% (0.8 mm/hr) | 100% | 95% | 748 mm Hg | SW 219° 3.81 (5.39) m/s | 0 |
Tue, May 12, 2026
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Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.