11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Light snow
-2°
Feels like -7°
Wind↑ NE 19 km/h
Gusts40 km/h
Humidity 80 %
💧 1.8 mm
Afternoon
Overcast
-1°
Feels like -7°
Wind↑ NNE 25 km/h
Gusts46 km/h
Humidity 83 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Light snow
-2°
Feels like -8°
Wind↑ NNE 24 km/h
Gusts49 km/h
Humidity 94 %
💧 1.8 mm
Afternoon
Light snow
0°
Feels like -5°
Wind↑ NNE 16 km/h
Gusts33 km/h
Humidity 97 %
💧 1.8 mm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Light snow
-1°
Feels like -5°
Wind↑ N 12 km/h
Gusts24 km/h
Humidity 98 %
💧 2.4 mm
Afternoon
Overcast
-0°
Feels like -3°
Wind↑ NNW 9 km/h
Humidity 87 %
14-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
-3°
Feels like -6°
Wind↑ NNE 6 km/h
Humidity 91 %
Afternoon
Mainly clear
-1°
Feels like -5°
Wind↑ E 12 km/h
Gusts23 km/h
Humidity 83 %
Helsinki forecast in charts · next 7 days
The week ahead: highs and lows
▲ This week runs +2.8° warmer than usual
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Helsinki climate: what a normal year looks like
From 18 h 56 min of daylight in late June to 5 h 49 min in late December.
Nights typically freeze from November to March, the coldest averaging −8 °C in February.
The hottest stretch is July, when afternoons average 21 °C; the coldest is February, when nights average −8 °C. Between those two months the average temperature changes by 23 °C.
There is no real dry season: monthly rainfall stays between 41 mm and 80 mm on average.
The coming week looks normal for October: forecast highs average 9 °C, against a usual 9 °C.
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
−2 °C
−7 °C
58 mm
Feb
−3 °C
−8 °C
48 mm
Mar
1 °C
−6 °C
42 mm
Apr
8 °C
1 °C
41 mm
May
14 °C
6 °C
48 mm
Jun
18 °C
10 °C
75 mm
Jul
21 °C
14 °C
80 mm
Aug
21 °C
13 °C
80 mm
Sep
15 °C
8 °C
63 mm
Oct
9 °C
4 °C
67 mm
Nov
4 °C
0 °C
67 mm
Dec
0 °C
−4 °C
65 mm
Whole year
9 °C
3 °C
730 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 60.17° N, 24.94° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Helsinki: pollution and pollen
2/6
Fair
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.56µg/m³
PM109µg/m³
O₃61µg/m³
NO₂4µg/m³
SO₂1µg/m³
Pollen
AlderNone
BirchNone
GrassNone
MugwortNone
OliveNone
RagweedNone
Copernicus CAMS model, updated several times a day.
Rain radar around Helsinki
Rain observed over the last two hours by official weather radars around Helsinki, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
Moon over Helsinki
Waning gibbous
87 % illuminated · 18.3 days
Rise 00:15 Set 22:45
Fri30/1079%
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Moonrise and moonset in local time (Europe/Helsinki); phase and lit fraction from a synodic calculation.
Look up a past day in Helsinki
Curious about the weather in Helsinki on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Helsinki weather at a glance
This page gathers everything about the weather in Helsinki, Uusimaa: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “partly cloudy”, it is 9 °C (feels like 8 °C) and the wind blows at 6 km/h.
Expected range today: 9 °C to 10 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the Helsinki forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
