5-day weather forecast Helsinki 21-04-2026
Weather forecast Helsinki today 21.04.2026: sunny, temperature from 3 °C to 12 °C.
No precipitation expected. Wind up to 3.11 m/s (gusts 6.5 m/s). Air humidity 38–61%, atmospheric pressure 764–769 mm Hg, UV index up to 3.
Sunset 20:54
Moonrise 06:14 · Moonset 03:06
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 5 °C | 0% | 4% | 54% | 769 mm Hg | N 10° 1.89 (4) m/s | 0 |
| 01:00 | Clear | 5 °C | 0% | 3% | 55% | 769 mm Hg | N 7° 2.39 (5.03) m/s | 0 |
| 02:00 | Clear | 5 °C | 0% | 3% | 56% | 769 mm Hg | N 357° 2.61 (5.47) m/s | 0 |
| 03:00 | Clear | 4 °C | 0% | 2% | 58% | 769 mm Hg | N 349° 2.69 (5.67) m/s | 0 |
| 04:00 | Clear | 4 °C | 0% | 2% | 59% | 769 mm Hg | NNW 342° 2.89 (6.08) m/s | 0 |
| 05:00 | Clear | 4 °C | 0% | 3% | 61% | 769 mm Hg | NNW 340° 3.11 (6.5) m/s | 0 |
| 06:00 |  Sunny | 3 °C | 0% | 3% | 61% | 769 mm Hg | NNW 342° 3.11 (6.5) m/s | 0 |
| 07:00 | Sunny | 4 °C | 0% | 3% | 59% | 768 mm Hg | NNW 343° 2.89 (6.08) m/s | 0.2 |
| 08:00 | Sunny | 6 °C | 0% | 1% | 53% | 768 mm Hg | NNW 343° 2.89 (5.36) m/s | 0.4 |
| 09:00 | Sunny | 7 °C | 0% | 0% | 47% | 768 mm Hg | NNW 346° 3.11 (5) m/s | 0.9 |
| 10:00 | Sunny | 9 °C | 0% | 0% | 42% | 768 mm Hg | NNW 343° 3 (4.64) m/s | 1.5 |
| 11:00 | Sunny | 10 °C | 0% | 2% | 38% | 767 mm Hg | NNW 344° 2.81 (4.33) m/s | 2.2 |
| 12:00 | Sunny | 11 °C | 0% | 10% | 38% | 767 mm Hg | NNW 342° 2.39 (3.83) m/s | 2.7 |
| 13:00 | Sunny | 11 °C | 0% | 18% | 38% | 767 mm Hg | NNW 329° 1.89 (3) m/s | 3 |
| 14:00 | Sunny | 12 °C | 0% | 8% | 40% | 767 mm Hg | NW 309° 1.69 (2.72) m/s | 3 |
| 15:00 | Sunny | 12 °C | 0% | 5% | 41% | 766 mm Hg | WNW 292° 1.89 (3.08) m/s | 2.6 |
| 16:00 | Sunny | 12 °C | 0% | 8% | 42% | 765 mm Hg | WNW 294° 2.31 (3.78) m/s | 2 |
| 17:00 | Sunny | 12 °C | 0% | 8% | 42% | 765 mm Hg | WNW 300° 2.5 (4.28) m/s | 1.3 |
| 18:00 |  Partly cloudy | 12 °C | 0% | 27% | 42% | 764 mm Hg | NW 318° 2.5 (4.58) m/s | 0.7 |
| 19:00 | Sunny | 12 °C | 0% | 11% | 43% | 764 mm Hg | NNW 338° 2.31 (4.47) m/s | 0.3 |
| 20:00 | Sunny | 11 °C | 0% | 11% | 45% | 764 mm Hg | N 358° 2.11 (4.42) m/s | 0.1 |
| 21:00 |  Partly cloudy | 9 °C | 0% | 33% | 49% | 764 mm Hg | NNE 28° 2.19 (4.61) m/s | 0 |
| 22:00 | Clear | 8 °C | 0% | 17% | 51% | 764 mm Hg | N 11° 1.81 (3.78) m/s | 0 |
| 23:00 | Clear | 8 °C | 0% | 2% | 52% | 764 mm Hg | NNW 341° 2 (4.19) m/s | 0 |
Frequently asked questions about the weather in Helsinki
Today in Helsinki the temperature ranges from 3 °C to 12 °C, wind up to 3.11 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 3.11 m/s with gusts up to 6.5 m/s. Check the detailed wind chart above for hourly wind data.
The air humidity in Helsinki today ranges from 38% to 61%. View the humidity chart above for hourly details.
The UV index in Helsinki today reaches up to 3. Check the UV index chart above for hourly values throughout the day.
The atmospheric pressure in Helsinki today ranges from 764 to 769 mm Hg. View the pressure chart above for hourly readings.
Cloud cover in Helsinki today reaches up to 33%. 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.