5-day weather forecast Helsinki 21-05-2026
Weather forecast Helsinki today 21.05.2026: sunny, temperature from 9 °C to 16 °C.
No precipitation expected. Wind up to 3.61 m/s (gusts 6.72 m/s). Air humidity 53–87%, atmospheric pressure 765–767 mm Hg, UV index up to 5.
Sunset 22:07
Moonrise 08:40 · Moonset 02:44
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 11 °C | 0% | 4% | 81% | 767 mm Hg | NW 309° 2.69 (5.67) m/s | 0 |
| 01:00 | Clear | 10 °C | 0% | 4% | 83% | 767 mm Hg | NW 315° 2.69 (5.67) m/s | 0 |
| 02:00 | Clear | 10 °C | 0% | 5% | 84% | 767 mm Hg | NNW 334° 2.31 (4.83) m/s | 0 |
| 03:00 | Clear | 10 °C | 0% | 7% | 86% | 767 mm Hg | NNW 338° 2.11 (4.42) m/s | 0 |
| 04:00 | Clear | 9 °C | 0% | 7% | 86% | 767 mm Hg | NNW 339° 2 (4.19) m/s | 0 |
| 05:00 |  Sunny | 9 °C | 0% | 7% | 87% | 767 mm Hg | NNW 338° 1.89 (4) m/s | 0 |
| 06:00 | Sunny | 10 °C | 0% | 7% | 84% | 767 mm Hg | NNW 331° 1.89 (4) m/s | 0.2 |
| 07:00 | Sunny | 11 °C | 0% | 8% | 78% | 767 mm Hg | N 359° 1.11 (2) m/s | 0.4 |
| 08:00 | Sunny | 13 °C | 0% | 8% | 73% | 767 mm Hg | ENE 78° 0.31 (0.5) m/s | 0.9 |
| 09:00 | Sunny | 14 °C | 0% | 8% | 69% | 767 mm Hg | S 185° 1.19 (1.89) m/s | 1.6 |
| 10:00 | Sunny | 14 °C | 0% | 7% | 66% | 767 mm Hg | S 187° 1.89 (2.92) m/s | 2.5 |
| 11:00 | Sunny | 15 °C | 0% | 7% | 64% | 767 mm Hg | SSW 193° 2.39 (3.72) m/s | 3.4 |
| 12:00 | Sunny | 15 °C | 0% | 7% | 62% | 767 mm Hg | SSW 197° 2.81 (4.5) m/s | 4.1 |
| 13:00 | Sunny | 15 °C | 0% | 8% | 59% | 767 mm Hg | SSW 207° 3.11 (5.03) m/s | 4.5 |
| 14:00 | Sunny | 16 °C | 0% | 9% | 56% | 767 mm Hg | SW 214° 3.31 (5.42) m/s | 4.4 |
| 15:00 | Sunny | 16 °C | 0% | 13% | 54% | 766 mm Hg | SW 215° 3.5 (5.86) m/s | 3.9 |
| 16:00 | Sunny | 16 °C | 0% | 13% | 53% | 766 mm Hg | SW 215° 3.61 (6.17) m/s | 5 |
| 17:00 | Sunny | 16 °C | 0% | 11% | 53% | 766 mm Hg | SW 218° 3.61 (6.33) m/s | 5 |
| 18:00 | Sunny | 15 °C | 0% | 9% | 53% | 766 mm Hg | SW 224° 3.61 (6.61) m/s | 5 |
| 19:00 | Sunny | 15 °C | 0% | 8% | 54% | 765 mm Hg | SW 234° 3.31 (6.31) m/s | 5 |
| 20:00 | Sunny | 15 °C | 0% | 7% | 59% | 765 mm Hg | WSW 241° 3.11 (6.28) m/s | 4 |
| 21:00 | Sunny | 13 °C | 0% | 8% | 66% | 765 mm Hg | WSW 247° 3 (6.31) m/s | 4 |
| 22:00 | Sunny | 12 °C | 0% | 16% | 72% | 765 mm Hg | W 260° 3.11 (6.5) m/s | 4 |
| 23:00 |  Partly cloudy | 11 °C | 0% | 29% | 75% | 765 mm Hg | W 272° 3.19 (6.72) m/s | 0 |
Frequently asked questions about the weather in Helsinki
Today in Helsinki the temperature ranges from 9 °C to 16 °C, wind up to 3.61 m/s. Check the detailed hourly forecast above for more information.
The precipitation probability in Helsinki today is 0%. View the full multi-day forecast above to see the rain chances for each upcoming day.
The wind speed in Helsinki today reaches up to 3.61 m/s with gusts up to 6.72 m/s. Check the detailed wind chart above for hourly wind data.
The air humidity in Helsinki today ranges from 53% to 87%. View the humidity chart above for hourly details.
The UV index in Helsinki today reaches up to 5. Check the UV index chart above for hourly values throughout the day.
The atmospheric pressure in Helsinki today ranges from 765 to 767 mm Hg. View the pressure chart above for hourly readings.
Cloud cover in Helsinki today reaches up to 29%. Check the cloud cover chart above for hourly details throughout the day.
Helsinki on the map
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.