5-day weather forecast Helsinki 18-04-2026
Weather forecast Helsinki tomorrow 18.04.2026: partly cloudy, temperature from 4 °C to 8 °C.
No precipitation expected. Wind up to 3.11 m/s (gusts 5.78 m/s). Air humidity 52–76%, atmospheric pressure 767–769 mm Hg, UV index up to 3.1.
Sunrise 05:55
Sunset 20:46
Sunset 20:46
Waxing Crescent1% illuminated
Moonrise 05:31 · Moonset 23:21
Moonrise 05:31 · Moonset 23:21
Chart
Table
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Clear | 5 °C | 0% | 9% | 68% | 767 mm Hg | NE 48° 1.19 (2.53) m/s | 0 |
| 01:00 |  Partly cloudy | 5 °C | 0% | 32% | 69% | 767 mm Hg | NE 37° 1.31 (2.72) m/s | 0 |
| 02:00 | Partly cloudy | 6 °C | 0% | 53% | 66% | 767 mm Hg | ENE 63° 2.11 (4.42) m/s | 0 |
| 03:00 |  Cloudy | 5 °C | 0% | 73% | 68% | 767 mm Hg | NE 48° 2.31 (4.83) m/s | 0 |
| 04:00 | Partly cloudy | 4 °C | 0% | 46% | 72% | 768 mm Hg | NE 37° 2.31 (4.83) m/s | 0 |
| 05:00 | Partly cloudy | 4 °C | 0% | 52% | 74% | 768 mm Hg | ENE 58° 2.61 (5.47) m/s | 0 |
| 06:00 |  Partly cloudy | 4 °C | 0% | 29% | 75% | 768 mm Hg | NE 54° 2.89 (5.78) m/s | 0 |
| 07:00 |  Sunny | 4 °C | 0% | 18% | 76% | 768 mm Hg | NE 56° 2.81 (5.25) m/s | 0.1 |
| 08:00 | Sunny | 5 °C | 0% | 8% | 70% | 768 mm Hg | ENE 62° 3.11 (4.97) m/s | 0.3 |
| 09:00 | Sunny | 6 °C | 0% | 4% | 64% | 768 mm Hg | ENE 69° 3.11 (4.67) m/s | 0.7 |
| 10:00 | Partly cloudy | 6 °C | 0% | 48% | 68% | 769 mm Hg | ESE 112° 2.39 (3.67) m/s | 1.5 |
| 11:00 | Sunny | 6 °C | 0% | 23% | 66% | 769 mm Hg | ESE 123° 2.5 (3.67) m/s | 2.2 |
| 12:00 | Sunny | 8 °C | 0% | 13% | 56% | 768 mm Hg | E 95° 2 (2.81) m/s | 2.8 |
| 13:00 | Partly cloudy | 8 °C | 0% | 30% | 53% | 768 mm Hg | ESE 109° 1.81 (2.53) m/s | 3.1 |
| 14:00 | Partly cloudy | 8 °C | 0% | 31% | 52% | 768 mm Hg | ESE 123° 2.19 (3.14) m/s | 3 |
| 15:00 | Partly cloudy | 8 °C | 0% | 32% | 54% | 768 mm Hg | SE 144° 2.5 (3.61) m/s | 2.6 |
| 16:00 | Partly cloudy | 8 °C | 0% | 30% | 55% | 768 mm Hg | SSE 161° 2.5 (3.64) m/s | 1.9 |
| 17:00 | Partly cloudy | 7 °C | 0% | 46% | 59% | 768 mm Hg | SSE 162° 2.69 (4) m/s | 1.2 |
| 18:00 | Partly cloudy | 6 °C | 0% | 54% | 61% | 768 mm Hg | SSE 166° 2.31 (3.56) m/s | 0.6 |
| 19:00 | Partly cloudy | 6 °C | 0% | 52% | 61% | 768 mm Hg | SE 143° 1.89 (3) m/s | 0.3 |
| 20:00 | Partly cloudy | 6 °C | 0% | 62% | 64% | 768 mm Hg | ESE 113° 2 (3.33) m/s | 0 |
| 21:00 | Partly cloudy | 5 °C | 0% | 46% | 69% | 769 mm Hg | E 100° 1.61 (3.08) m/s | 0 |
| 22:00 | Partly cloudy | 4 °C | 0% | 37% | 70% | 769 mm Hg | E 100° 1.81 (3.53) m/s | 0 |
| 23:00 | Cloudy | 4 °C | 0% | 64% | 74% | 769 mm Hg | E 100° 2.39 (4.53) m/s | 0 |
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.