5-day weather forecast Helsinki 17-08-2026
Weather forecast Helsinki today 17.08.2026: blowing snow, temperature from -3 °C to -2 °C.
Precipitation probability 83%. Wind up to 18 m/s (gusts 19.03 m/s). Air humidity 62–96%, atmospheric pressure 728–732 mm Hg, UV index up to 3.6.
5 days at a glance — tap a day to open it
Sunrise 05:39
Sunset 21:09
Sunset 21:09
Waxing Crescent27% illuminated
Moonrise 12:43 · Moonset 21:21
Moonrise 12:43 · Moonset 21:21
Chart
Table
Mon, Aug 17, 2026
| Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index | ||
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Blizzard | -2 °C | 40% (0.09 mm/hr) | 85% | 85% | 731 mm Hg | NW 313° 11.19 (12.92) m/s | 0 |
| 01:00 | Blizzard | -2 °C | 43% (0.09 mm/hr) | 100% | 83% | 731 mm Hg | NW 310° 11.5 (13.11) m/s | 0 |
| 02:00 |  Blowing snow | -3 °C | 35% (0.07 mm/hr) | 100% | 78% | 732 mm Hg | WNW 301° 11.61 (13.22) m/s | 0 |
| 03:00 | Blowing snow | -3 °C | 34% (0.06 mm/hr) | 100% | 78% | 732 mm Hg | WNW 301° 11.69 (13.5) m/s | 0 |
| 04:00 | Blowing snow | -2 °C | 34% (0.07 mm/hr) | 100% | 77% | 732 mm Hg | WNW 297° 12 (13.81) m/s | 0 |
| 05:00 | Blowing snow | -3 °C | 34% (0.06 mm/hr) | 100% | 77% | 732 mm Hg | WNW 297° 11.69 (13.61) m/s | 0 |
| 06:00 |  Blowing snow | -3 °C | 23% (0.02 mm/hr) | 72% | 77% | 732 mm Hg | WNW 302° 11.5 (13.14) m/s | 0 |
| 07:00 |  Partly cloudy | -3 °C | 15% | 60% | 77% | 732 mm Hg | NW 308° 10.69 (12.53) m/s | 0 |
| 08:00 | Blowing snow | -3 °C | 31% (0.02 mm/hr) | 100% | 80% | 732 mm Hg | NW 318° 10.5 (12.5) m/s | 0.1 |
| 09:00 |  Overcast | -2 °C | 25% | 100% | 81% | 732 mm Hg | NW 325° 10 (12.14) m/s | 0.7 |
| 10:00 | Blowing snow | -3 °C | 45% (0.07 mm/hr) | 100% | 94% | 731 mm Hg | NNW 348° 9.39 (14.22) m/s | 1.8 |
| 11:00 |  Blizzard | -2 °C | 75% (0.58 mm/hr) | 100% | 96% | 731 mm Hg | NNW 342° 12.31 (15.61) m/s | 2.5 |
| 12:00 | Blizzard | -2 °C | 83% (0.99 mm/hr) | 100% | 96% | 730 mm Hg | NNW 344° 12.11 (15.89) m/s | 2.7 |
| 13:00 | Blowing snow | -2 °C | 42% (0.04 mm/hr) | 100% | 93% | 729 mm Hg | NNW 338° 12.69 (16.22) m/s | 3.5 |
| 14:00 | Blizzard | -2 °C | 59% (0.29 mm/hr) | 100% | 90% | 728 mm Hg | NNW 341° 11.39 (15.53) m/s | 3.6 |
| 15:00 | Blizzard | -2 °C | 53% (0.25 mm/hr) | 95% | 87% | 728 mm Hg | NW 321° 13.11 (15.53) m/s | 2.5 |
| 16:00 | Blowing snow | -3 °C | 40% (0.06 mm/hr) | 98% | 88% | 728 mm Hg | WNW 294° 18 (19.03) m/s | 1.4 |
| 17:00 | Blowing snow | -2 °C | 27% (0.04 mm/hr) | 91% | 74% | 728 mm Hg | WNW 295° 13.11 (15.89) m/s | 0.6 |
| 18:00 | Blowing snow | -3 °C | 21% (0.02 mm/hr) | 60% | 78% | 729 mm Hg | WNW 288° 13.39 (15.42) m/s | 0.3 |
| 19:00 | Blowing snow | -3 °C | 23% (0.02 mm/hr) | 69% | 77% | 729 mm Hg | WNW 298° 12.89 (14) m/s | 0.4 |
| 20:00 | Blowing snow | -3 °C | 25% (0.03 mm/hr) | 90% | 72% | 729 mm Hg | WNW 299° 10.69 (12.42) m/s | 0.1 |
| 21:00 |  Patchy snow possible | -3 °C | 16% (0.03 mm/hr) | 78% | 66% | 729 mm Hg | WNW 295° 10.69 (11.69) m/s | 0 |
| 22:00 | Blowing snow | -3 °C | 24% (0.04 mm/hr) | 100% | 64% | 729 mm Hg | WNW 294° 9.31 (10.5) m/s | 0 |
| 23:00 | Blowing snow | -3 °C | 23% (0.03 mm/hr) | 100% | 62% | 728 mm Hg | WNW 288° 8.89 (9.92) m/s | 0 |
Mon, Aug 17, 2026
Frequently asked questions about the 5-day weather in Helsinki
What will the weather be like in Helsinki over the next 5 days?
Over the next 5 days in Helsinki the temperature is expected to range from about -7 to -2 °C. See the detailed hourly forecast for each of the 5 days in the charts above.
On which of the next 5 days will it rain in Helsinki?
The chance of rain in Helsinki over the next 5 days reaches 83%. Check the 5-day precipitation chart above to see exactly which days and hours bring rain.
How accurate is the 5-day weather forecast for Helsinki?
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.
Which of the next 5 days in Helsinki will be the warmest and which the coolest?
Over the next 5 days the temperature in Helsinki ranges from about -7 to -2 °C. Compare the warmest and coolest day on the temperature chart above.
Will it be windy in Helsinki over the next 5 days?
Over the next 5 days the wind in Helsinki picks up to 19 m/s. The windiest days are easy to spot on the wind chart above.
Which day of the week in Helsinki is best for a walk or a trip?
For a walk or a trip, pick the days with the lowest chance of rain (up to 83%) and light wind — easy to compare on the 5-day charts above.
How can I best use the 5-day forecast for Helsinki?
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.