5-day weather forecast Helsinki Sep 17, 2026
14°Weather forecast Helsinki today Sep 17, 2026: patchy rain possible, temperature from 11 °C to 16 °C.
Precipitation probability 40%. Wind up to 6.11 m/s (gusts 11.53 m/s). Air humidity 69–93%, atmospheric pressure 749–752 mm Hg, UV index up to 2.1.
Weather Alerts
Yellow wind warning for land areas: Locally in the southern part of the country, Sat 13.00 - 18.00
Wind warning for land areas
Wind warning for land areas: Probability for strong winds from southwest is 30% in Saturday noon and evening. Wind gusts can exceed 15 m/s.
Yellow wind warning for land areas: Locally in the southern part of the country, Sat 13.00 - 18.00
Wind warning for land areas
Wind warning for land areas: Probability for strong winds from southwest is 30% in Saturday noon and evening. Wind gusts can exceed 15 m/s.
5 days at a glance — tap a day to open it
Sunrise 06:53
Sunset 19:36
Sunset 19:36
First Quarter42% illuminated
Moonrise 16:51 · Moonset 20:03
Moonrise 16:51 · Moonset 20:03
Chart
Table
Thu, Sep 17, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Patchy rain possible | 15 °C | 31% (0.01 mm/hr) | 100% | 91% | 751 mm Hg | SW 236° 4.5 (10.83) m/s | 0 |
| 01:00 | Patchy rain possible | 14 °C | 31% (0.01 mm/hr) | 100% | 91% | 751 mm Hg | SW 229° 4.11 (9.83) m/s | 0 |
| 02:00 |  Overcast | 13 °C | 31% | 100% | 93% | 751 mm Hg | SW 228° 4.11 (10.42) m/s | 0 |
| 03:00 | Patchy rain possible | 13 °C | 23% (0.01 mm/hr) | 62% | 93% | 751 mm Hg | SW 230° 4.31 (10.5) m/s | 0 |
| 04:00 | Patchy rain possible | 13 °C | 26% (0.02 mm/hr) | 70% | 92% | 750 mm Hg | SW 225° 4.19 (10.72) m/s | 0 |
| 05:00 | Patchy rain possible | 13 °C | 29% (0.02 mm/hr) | 84% | 92% | 750 mm Hg | SW 227° 4.5 (11.22) m/s | 0 |
| 06:00 |  Clear | 13 °C | 14% | 5% | 90% | 750 mm Hg | SW 231° 4.69 (11.53) m/s | 0 |
| 07:00 | Patchy rain possible | 13 °C | 31% (0.04 mm/hr) | 88% | 90% | 750 mm Hg | SW 226° 4.31 (11.03) m/s | 0 |
| 08:00 |  Sunny | 13 °C | 14% | 3% | 90% | 750 mm Hg | WSW 237° 4.19 (11.22) m/s | 0.1 |
| 09:00 | Patchy rain possible | 14 °C | 25% (0.03 mm/hr) | 79% | 86% | 750 mm Hg | SW 234° 4.89 (10.69) m/s | 0.4 |
| 10:00 | Patchy rain possible | 14 °C | 31% (0.1 mm/hr) | 85% | 82% | 750 mm Hg | SW 232° 5.5 (10.22) m/s | 0.8 |
| 11:00 | Patchy rain possible | 15 °C | 27% (0.09 mm/hr) | 77% | 81% | 750 mm Hg | SW 232° 5.89 (10.31) m/s | 1.3 |
| 12:00 | Patchy rain possible | 15 °C | 24% (0.07 mm/hr) | 80% | 78% | 749 mm Hg | SW 234° 6.11 (9.42) m/s | 1.8 |
| 13:00 | Patchy rain possible | 16 °C | 40% (0.44 mm/hr) | 70% | 75% | 749 mm Hg | WSW 237° 5.89 (9.11) m/s | 2.1 |
| 14:00 | Patchy rain possible | 16 °C | 22% (0.08 mm/hr) | 87% | 70% | 750 mm Hg | SW 235° 5.81 (8.92) m/s | 2 |
| 15:00 | Patchy rain possible | 16 °C | 36% (0.33 mm/hr) | 80% | 70% | 750 mm Hg | SW 236° 5.39 (8.22) m/s | 1.7 |
| 16:00 | Patchy rain possible | 16 °C | 19% (0.08 mm/hr) | 75% | 69% | 750 mm Hg | SW 233° 5 (7.64) m/s | 1.2 |
| 17:00 | Patchy rain possible | 16 °C | 25% (0.16 mm/hr) | 79% | 71% | 750 mm Hg | SW 229° 4.39 (7.42) m/s | 0.7 |
| 18:00 | Patchy rain possible | 15 °C | 24% (0.13 mm/hr) | 74% | 73% | 750 mm Hg | SW 235° 3.69 (7.39) m/s | 0.3 |
| 19:00 | Patchy rain possible | 14 °C | 28% (0.12 mm/hr) | 78% | 80% | 750 mm Hg | WSW 241° 3.31 (7.42) m/s | 0 |
| 20:00 | Clear | 13 °C | 12% | 5% | 87% | 751 mm Hg | WSW 249° 3.5 (8.42) m/s | 0 |
| 21:00 | Patchy rain possible | 12 °C | 34% (0.09 mm/hr) | 78% | 91% | 751 mm Hg | WSW 252° 3.61 (9.33) m/s | 0 |
| 22:00 | Clear | 12 °C | 15% | 5% | 93% | 752 mm Hg | WSW 248° 3.5 (9.53) m/s | 0 |
| 23:00 | Clear | 11 °C | 15% | 5% | 93% | 752 mm Hg | SW 236° 3.11 (9.22) m/s | 0 |
Thu, Sep 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 9 to 16 °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 79%. 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 9 to 16 °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 8 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 79%) 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.
Will I need an umbrella or sunscreen in Helsinki this week?
Rain reaches a 79% chance across the next 5 days, so pack something waterproof for the wettest of them — the daily strip above shows which. Today’s UV index peaks at 2.1; sunscreen is worth it from about 3 upwards.
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.