Weather forecast Helsinki 21-09-2025
Weather Sunday 21 September temperature from 10 °C to 16 °C, cloud cover up to 100%, precipitation is expected with a 100% chance, wind up to 4.89 m/s (gusts up to 7.97 m/s), air humidity from 69% to 94%, atmospheric pressure from 753 to 757 mm Hg, UV Index to 1.1 during the day. Forecast for the next days on the table.
Sunrise 06:53
Sunset 19:34
Sunset 19:34
Chart
Table
Type of temperature:
°C
°F| Temperature | Precipitation | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 11 °C | 0% | 16% | 84% | 756 mm Hg | WNW 3.89 m/s | 0 |
| 01:00 | Clear | 10 °C | 0% | 7% | 84% | 757 mm Hg | WNW 3.19 m/s | 0 |
| 02:00 | Clear | 10 °C | 0% | 8% | 84% | 757 mm Hg | WNW 2.89 m/s | 0 |
| 03:00 | Clear | 10 °C | 0% | 11% | 83% | 757 mm Hg | WNW 2.39 m/s | 0 |
| 04:00 | Clear | 10 °C | 0% | 15% | 83% | 757 mm Hg | WNW 2.11 m/s | 0 |
| 05:00 | Clear | 10 °C | 0% | 20% | 82% | 757 mm Hg | NW 1.39 m/s | 0 |
| 06:00 | Clear | 10 °C | 0% | 18% | 80% | 757 mm Hg | W 1 m/s | 0 |
| 07:00 |  Partly cloudy | 11 °C | 0% | 50% | 77% | 757 mm Hg | S 1.11 m/s | 0 |
| 08:00 |  Sunny | 12 °C | 0% | 8% | 73% | 757 mm Hg | S 2.11 m/s | 0 |
| 09:00 | Sunny | 14 °C | 0% | 16% | 69% | 756 mm Hg | S 3.11 m/s | 0 |
| 10:00 |  Partly cloudy | 14 °C | 0% | 59% | 69% | 756 mm Hg | S 4.19 m/s | 0.1 |
| 11:00 |  Overcast | 15 °C | 0% | 94% | 74% | 756 mm Hg | SSW 4.81 m/s | 0.2 |
| 12:00 |  Light drizzle | 14 °C | 100% (0.18 mm/hr) | 100% | 86% | 755 mm Hg | SSW 4.11 m/s | 0.3 |
| 13:00 | Light drizzle | 14 °C | 100% (0.28 mm/hr) | 100% | 93% | 755 mm Hg | SW 3.61 m/s | 0.4 |
| 14:00 |  Patchy rain possible | 15 °C | 74% (0.01 mm/hr) | 80% | 87% | 755 mm Hg | SW 3.61 m/s | 0.9 |
| 15:00 | Patchy rain possible | 15 °C | 80% (0.01 mm/hr) | 76% | 83% | 755 mm Hg | WSW 4.11 m/s | 1.1 |
| 16:00 | Overcast | 16 °C | 0% | 92% | 82% | 755 mm Hg | WSW 3.61 m/s | 1.1 |
| 17:00 |  Cloudy | 15 °C | 0% | 73% | 79% | 754 mm Hg | WSW 4.11 m/s | 0.6 |
| 18:00 | Light drizzle | 14 °C | 100% (0.5 mm/hr) | 85% | 79% | 755 mm Hg | WSW 4.89 m/s | 0.2 |
| 19:00 |  Light rain | 13 °C | 100% (0.9 mm/hr) | 100% | 87% | 755 mm Hg | W 3.81 m/s | 0 |
| 20:00 |  Light rain | 12 °C | 100% (1.28 mm/hr) | 93% | 91% | 755 mm Hg | NW 3.69 m/s | 0 |
| 21:00 |  Moderate rain | 11 °C | 100% (2.81 mm/hr) | 100% | 93% | 754 mm Hg | NW 2.31 m/s | 0 |
| 22:00 | Light rain | 11 °C | 100% (2.34 mm/hr) | 100% | 94% | 754 mm Hg | NW 1.69 m/s | 0 |
| 23:00 | Light rain | 11 °C | 100% (1.51 mm/hr) | 100% | 94% | 753 mm Hg | NW 1.19 m/s | 0 |
