5-day weather forecast Helsinki 12-08-2026
Weather forecast Helsinki today 12.08.2026: sunny, temperature from 9 °C to 17 °C.
Precipitation probability 13%. Wind up to 7.19 m/s (gusts 9.72 m/s). Air humidity 52–87%, atmospheric pressure 760–767 mm Hg, UV index up to 3.5.
Sunset 21:23
Moonrise 03:49 · Moonset 21:21
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 12 °C | 8% | 22% | 72% | 760 mm Hg | WNW 297° 5.11 (8.36) m/s | 0 |
| 01:00 | Clear | 12 °C | 7% | 13% | 70% | 761 mm Hg | WNW 297° 5.81 (9.31) m/s | 0 |
| 02:00 | Clear | 11 °C | 7% | 12% | 72% | 761 mm Hg | WNW 297° 5.69 (9.11) m/s | 0 |
| 03:00 | Clear | 9 °C | 8% | 0% | 87% | 761 mm Hg | WNW 298° 6 (9.53) m/s | 0 |
| 04:00 | Clear | 11 °C | 9% | 11% | 77% | 762 mm Hg | WNW 301° 6.11 (9.64) m/s | 0 |
| 05:00 | Clear | 11 °C | 10% | 10% | 81% | 762 mm Hg | WNW 302° 6.19 (9.72) m/s | 0 |
| 06:00 |  Sunny | 11 °C | 11% | 12% | 83% | 763 mm Hg | WNW 302° 6.31 (9.61) m/s | 0 |
| 07:00 | Sunny | 12 °C | 11% | 14% | 82% | 763 mm Hg | NW 304° 6.31 (8.83) m/s | 0.2 |
| 08:00 | Sunny | 13 °C | 8% | 8% | 76% | 764 mm Hg | NW 306° 6.39 (8.28) m/s | 0.6 |
| 09:00 | Sunny | 14 °C | 6% | 10% | 67% | 764 mm Hg | NW 308° 6.81 (8.42) m/s | 1.2 |
| 10:00 |  Partly cloudy | 15 °C | 7% | 45% | 60% | 764 mm Hg | NW 309° 6.81 (8.17) m/s | 2 |
| 11:00 |  Cloudy | 16 °C | 10% | 81% | 55% | 764 mm Hg | NW 307° 6.89 (8.08) m/s | 2.8 |
| 12:00 |  Overcast | 16 °C | 13% | 100% | 54% | 764 mm Hg | NW 306° 7.19 (8.56) m/s | 3.1 |
| 13:00 | Overcast | 17 °C | 12% | 100% | 52% | 764 mm Hg | NW 311° 7.19 (8.33) m/s | 3.5 |
| 14:00 | Overcast | 16 °C | 12% | 97% | 54% | 764 mm Hg | NW 314° 6.31 (7.83) m/s | 2.5 |
| 15:00 | Cloudy | 16 °C | 9% | 70% | 56% | 765 mm Hg | NW 315° 5.69 (7.53) m/s | 1.4 |
| 16:00 |  Patchy rain possible | 17 °C | 10% (0.01 mm/hr) | 76% | 55% | 765 mm Hg | NW 308° 6 (7.78) m/s | 1.4 |
| 17:00 | Partly cloudy | 16 °C | 5% | 32% | 56% | 765 mm Hg | NW 319° 6.19 (8.47) m/s | 0.8 |
| 18:00 | Patchy rain possible | 17 °C | 7% (0.01 mm/hr) | 54% | 53% | 765 mm Hg | NW 320° 5.89 (7.75) m/s | 0.9 |
| 19:00 | Partly cloudy | 16 °C | 6% | 45% | 56% | 766 mm Hg | NW 321° 6.61 (9.08) m/s | 0.3 |
| 20:00 | Cloudy | 15 °C | 10% | 78% | 55% | 767 mm Hg | NW 326° 6.11 (8.92) m/s | 0.1 |
| 21:00 | Cloudy | 15 °C | 9% | 79% | 53% | 767 mm Hg | NNW 328° 5.69 (8.56) m/s | 0 |
| 22:00 |  Cloudy | 15 °C | 8% | 67% | 53% | 767 mm Hg | NW 323° 5 (7.83) m/s | 0 |
| 23:00 |  Partly cloudy | 15 °C | 7% | 54% | 55% | 767 mm Hg | NW 313° 4.39 (7) m/s | 0 |
Frequently asked questions about the 5-day weather in Helsinki
Over the next 5 days in Helsinki the temperature is expected to range from about 9 to 21 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
The chance of rain in Helsinki over the next 5 days reaches 55%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
A 5-day forecast is fairly reliable: the first 2–3 days are usually very accurate, while days 4–5 may be refined. The data is updated several times a day, so check back before important plans.
Over the next 5 days the temperature in Helsinki ranges from about 9 to 21 °C. Compare the warmest and coolest day on the temperature chart above.
Over the next 5 days the wind in Helsinki picks up to 7 m/s. The windiest days are easy to spot on the wind chart above.
For a walk or a trip, pick the days with the lowest chance of rain (up to 55%) and light wind — easy to compare on the 5-day charts above.
The first 2–3 days are reliable enough for firm decisions, while days 4–5 are a guide that sharpens as they approach. The forecast is updated several times a day, so check again before important plans.
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.