5-day weather forecast Helsinki Sep 18, 2026
14°Weather forecast Helsinki today Sep 18, 2026: light rain shower, temperature from 11 °C to 14 °C.
Precipitation probability 72%. Wind up to 8.31 m/s (gusts 14.72 m/s). Air humidity 82–95%, atmospheric pressure 752–752 mm Hg, UV index up to 0.7.
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: Satakunta and locally in the southern part of the country, Sat 11.00 - Sun 0.00
Wind warning for land areas
Wind warning for land areas: Probability for strong winds from southwest is 30% from Saturday noon to the night between Saturday and Sunday. Wind gusts can exceed 15 m/s.
Yellow wind warning for land areas: Satakunta and locally in the southern part of the country, Sat 11.00 - Sun 0.00
Wind warning for land areas
Wind warning for land areas: Strong winds from southwest may bring strong gusts of 15 m/s starting before noon.
5 days at a glance — tap a day to open it
Sunrise 06:55
Sunset 19:33
Sunset 19:33
First Quarter53% illuminated
Moonrise 17:55 · Moonset 20:50
Moonrise 17:55 · Moonset 20:50
Chart
Table
Fri, Sep 18, 2026
| Time | Weather | Temperature | Rain chance | Cloud cover | Humidity | Pressure | Wind | UV Index |
|---|---|---|---|---|---|---|---|---|
| 00:00 |  Mist | 11 °C | 34% (0.02 mm/hr) | 76% | 95% | 752 mm Hg | WSW 246° 2.5 (7.75) m/s | 0 |
| 01:00 | Mist | 11 °C | 31% (0.04 mm/hr) | 54% | 95% | 752 mm Hg | WSW 238° 2.61 (7.72) m/s | 0 |
| 02:00 |  Patchy rain possible | 11 °C | 33% (0.05 mm/hr) | 80% | 94% | 752 mm Hg | WSW 241° 2.5 (7.19) m/s | 0 |
| 03:00 | Patchy rain possible | 11 °C | 36% (0.06 mm/hr) | 96% | 92% | 752 mm Hg | WSW 239° 2.39 (5.11) m/s | 0 |
| 04:00 | Patchy rain possible | 11 °C | 38% (0.08 mm/hr) | 100% | 91% | 752 mm Hg | SW 233° 2.61 (6.31) m/s | 0 |
| 05:00 | Patchy rain possible | 12 °C | 32% (0.03 mm/hr) | 100% | 88% | 752 mm Hg | WSW 239° 3.11 (9.42) m/s | 0 |
| 06:00 | Patchy rain possible | 11 °C | 36% (0.08 mm/hr) | 100% | 88% | 752 mm Hg | WSW 241° 3.11 (9.53) m/s | 0 |
| 07:00 |  Patchy rain possible | 12 °C | 33% (0.06 mm/hr) | 100% | 86% | 752 mm Hg | SW 224° 3 (9.11) m/s | 0 |
| 08:00 | Light rain shower | 12 °C | 39% (0.16 mm/hr) | 100% | 84% | 752 mm Hg | SSW 213° 3.69 (9.69) m/s | 0.1 |
| 09:00 | Patchy rain possible | 13 °C | 30% (0.05 mm/hr) | 100% | 82% | 752 mm Hg | SSW 202° 5.39 (9.72) m/s | 0.3 |
| 10:00 | Light rain shower | 13 °C | 59% (0.48 mm/hr) | 100% | 88% | 752 mm Hg | SSW 201° 5.81 (10.19) m/s | 0.4 |
| 11:00 | Light rain shower | 13 °C | 58% (0.38 mm/hr) | 100% | 94% | 752 mm Hg | S 191° 6.31 (11.69) m/s | 0.2 |
| 12:00 | Light rain shower | 13 °C | 66% (0.58 mm/hr) | 100% | 93% | 752 mm Hg | SSW 209° 7.81 (13) m/s | 0.2 |
| 13:00 | Light rain shower | 14 °C | 55% (0.35 mm/hr) | 100% | 92% | 752 mm Hg | SSW 211° 7 (12.22) m/s | 0.2 |
| 14:00 | Light rain shower | 14 °C | 70% (0.71 mm/hr) | 100% | 94% | 752 mm Hg | SSW 194° 6.81 (13.53) m/s | 0.3 |
| 15:00 | Light rain shower | 13 °C | 70% (0.72 mm/hr) | 100% | 94% | 752 mm Hg | SSW 208° 7.19 (13.53) m/s | 0.7 |
| 16:00 | Light rain shower | 14 °C | 72% (0.87 mm/hr) | 100% | 92% | 752 mm Hg | SSW 210° 8.31 (14.72) m/s | 0.3 |
| 17:00 | Light rain shower | 14 °C | 53% (0.53 mm/hr) | 62% | 91% | 752 mm Hg | SW 219° 7.31 (12.92) m/s | 0.1 |
| 18:00 | Patchy rain possible | 14 °C | 60% (0.67 mm/hr) | 80% | 88% | 752 mm Hg | SW 216° 6.61 (12.03) m/s | 0.2 |
| 19:00 | Light rain shower | 14 °C | 48% (0.52 mm/hr) | 51% | 88% | 752 mm Hg | SW 221° 6.5 (12.42) m/s | 0 |
| 20:00 |  Clear | 13 °C | 13% | 3% | 89% | 752 mm Hg | SW 227° 5.5 (11.92) m/s | 0 |
| 21:00 | Patchy rain possible | 13 °C | 50% (0.38 mm/hr) | 78% | 90% | 752 mm Hg | SW 227° 5.31 (12) m/s | 0 |
| 22:00 | Patchy rain possible | 12 °C | 37% (0.07 mm/hr) | 100% | 90% | 752 mm Hg | SW 226° 5.31 (12) m/s | 0 |
| 23:00 |  Light rain shower | 13 °C | 44% (0.21 mm/hr) | 100% | 87% | 752 mm Hg | SW 216° 5.81 (12.33) m/s | 0 |
Fri, Sep 18, 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 8 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 72%. 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 8 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 9 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 72%) 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 72% 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 0.7; 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.