5-day weather forecast Helsinki Sep 11, 2026
17°Weather forecast Helsinki tomorrow Sep 11, 2026: sunny, temperature from 9 °C to 17 °C.
Precipitation probability 87%. Wind up to 5.81 m/s (gusts 11.03 m/s). Air humidity 52–96%, atmospheric pressure 752–761 mm Hg, UV index up to 2.3.
Weather Alerts
Yellow heavy rain warning: Locally in the southern part of the country, Thu 15.00 - 23.00
Heavy rain warning
Heavy rain warning: From the afternoon on heavy rain of more than 20 mm per hour can be expected.
5 days at a glance — tap a day to open it
Sunrise 06:38
Sunset 19:54
Sunset 19:54
New Moon0% illuminated
Moonrise 06:39 · Moonset 19:33
Moonrise 06:39 · Moonset 19:33
Chart
Table
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Moderate or heavy rain shower | 12 °C | 87% (3 mm/hr) | 100% | 96% | 752 mm Hg | N 6° 2.89 (7.5) m/s | 0 |
| 01:00 |  Light rain shower | 12 °C | 80% (1.56 mm/hr) | 100% | 96% | 752 mm Hg | NNW 344° 3 (7.19) m/s | 0 |
| 02:00 | Light rain shower | 11 °C | 80% (1.74 mm/hr) | 98% | 94% | 753 mm Hg | NNW 339° 3.5 (7.72) m/s | 0 |
| 03:00 |  Overcast | 10 °C | 32% | 100% | 94% | 753 mm Hg | NNW 332° 3.61 (8.81) m/s | 0 |
| 04:00 | Overcast | 10 °C | 32% | 100% | 93% | 753 mm Hg | NNW 328° 4 (9.92) m/s | 0 |
| 05:00 |  Clear | 10 °C | 17% | 19% | 94% | 754 mm Hg | NW 323° 4 (10.31) m/s | 0 |
| 06:00 |  Partly cloudy | 10 °C | 20% | 35% | 96% | 754 mm Hg | NW 310° 4 (10.14) m/s | 0 |
| 07:00 |  Overcast | 9 °C | 30% | 90% | 94% | 755 mm Hg | NW 307° 4.39 (10.22) m/s | 0 |
| 08:00 | Overcast | 10 °C | 31% | 99% | 92% | 755 mm Hg | NW 307° 4.61 (9.92) m/s | 0.2 |
| 09:00 | Overcast | 10 °C | 30% | 100% | 91% | 755 mm Hg | NW 305° 4.89 (10.22) m/s | 0.5 |
| 10:00 |  Patchy rain possible | 10 °C | 25% (0.01 mm/hr) | 73% | 90% | 756 mm Hg | NW 306° 5 (11.03) m/s | 0.9 |
| 11:00 |  Partly cloudy | 12 °C | 15% | 42% | 83% | 756 mm Hg | NW 305° 5.31 (9.69) m/s | 1.5 |
| 12:00 | Partly cloudy | 14 °C | 14% | 59% | 75% | 757 mm Hg | NW 309° 5.81 (9.19) m/s | 2 |
| 13:00 | Partly cloudy | 15 °C | 7% | 26% | 68% | 758 mm Hg | NW 313° 5.5 (8.61) m/s | 2.3 |
| 14:00 | Sunny | 15 °C | 5% | 6% | 64% | 758 mm Hg | NW 311° 5.61 (8.33) m/s | 2.3 |
| 15:00 | Patchy rain possible | 16 °C | 17% (0.07 mm/hr) | 82% | 58% | 758 mm Hg | NW 310° 5.31 (8.53) m/s | 1.9 |
| 16:00 | Sunny | 17 °C | 3% | 6% | 56% | 758 mm Hg | WNW 301° 4.19 (7.92) m/s | 1.4 |
| 17:00 | Sunny | 17 °C | 2% | 3% | 52% | 758 mm Hg | WNW 288° 4.39 (7.25) m/s | 0.8 |
| 18:00 | Sunny | 16 °C | 3% | 4% | 55% | 759 mm Hg | WNW 286° 4.31 (7.72) m/s | 0.4 |
| 19:00 | Patchy rain possible | 15 °C | 10% (0.01 mm/hr) | 71% | 61% | 759 mm Hg | WNW 285° 4.19 (9.25) m/s | 0.1 |
| 20:00 |  Patchy rain possible | 13 °C | 15% (0.01 mm/hr) | 83% | 69% | 760 mm Hg | W 279° 3.39 (9.5) m/s | 0 |
| 21:00 | Patchy rain possible | 11 °C | 19% (0.01 mm/hr) | 78% | 78% | 760 mm Hg | W 272° 3.5 (9.61) m/s | 0 |
| 22:00 | Clear | 11 °C | 11% | 5% | 83% | 761 mm Hg | W 276° 3.69 (9.83) m/s | 0 |
| 23:00 | Partly cloudy | 10 °C | 16% | 35% | 88% | 761 mm Hg | WNW 282° 3.11 (9) m/s | 0 |
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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.