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Weather in Helsinki — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Helsinki

🌤️

+10°

Mostly clear

Feels like +10° · humidity 81%

Today 12.9: +16° / +10°

🕐 08:25

Wind

1 km/h

UV index

Air (AQI)

23 · Good

Precipitation

41%

Humidity

81%

Pressure

1017 hPa

Sunrise / sunset

06:40 / 19:51

Sea temperature

🌊 +16°

👕 What to wear today

Comfortable — a T-shirt, a light sweater for the evening.

☂️ Take an umbrella

Weather for an activity:

🎣 fishing 🏖️ the beach 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Helsinki

Today, 12 September, Saturday, in Helsinki (Finland): cloudy, light rain in places, moderately warm. During the day the air will warm up to +16°, at night around +10°. Due to the wind it feels like +10°. Wind up to 19 km/h. Brief rain is possible — an umbrella won't hurt. A T-shirt is comfortable during the day, but take a light sweater or windbreaker for the evening. The water is cold, +16° — too chilly for swimming. The sun will rise at 06:40 and set at 19:51 — daylight lasts 13 hours.

Hourly weather in Helsinki

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Helsinki for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

🌦️

💧 41%

+10° +16°

Morning

🌤️

+10°

Day

🌦️

+16°

Evening

🌇

+16°

Night

🌙

+10°

Drizzle · precipitation 41% · wind up to 19 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tomorrow 13.9

🌦️

💧 52%

+13° +16°

Morning

☁️

+15°

Day

🌦️

+16°

Evening

🌇

+15°

Night

🌙

+13°

Drizzle · precipitation 52% · wind up to 19 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 14.9

🌤️

💧 10%

+11° +17°

Morning

🌤️

+13°

Day

🌤️

+17°

Evening

🌇

+16°

Night

🌙

+11°

Mostly clear · precipitation 10% · wind up to 12 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 15.9

☁️

💧 11%

+7° +15°

Morning

☁️

+10°

Day

☁️

+15°

Evening

🌇

+13°

Night

🌙

+7°

Overcast · precipitation 11% · wind up to 10 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Wed 16.9

🌦️

💧 55%

+13° +15°

Morning

🌦️

+14°

Day

🌦️

+15°

Evening

🌇

+15°

Night

🌙

+13°

Rain showers · precipitation 55% · wind up to 28 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Thu 17.9

🌦️

💧 57%

+13° +17°

Morning

🌦️

+14°

Day

🌦️

+17°

Evening

🌇

+16°

Night

🌙

+13°

Rain showers · precipitation 57% · wind up to 28 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Fri 18.9

🌦️

💧 65%

+13° +14°

Morning

🌦️

+13°

Day

🌦️

+14°

Evening

🌇

+14°

Night

🌙

+13°

Drizzle · precipitation 65% · wind up to 27 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Sat 19.9

🌦️

💧 69%

+13° +15°

Morning

🌦️

+14°

Day

🌦️

+15°

Evening

🌇

+15°

Night

🌙

+13°

Drizzle · precipitation 69% · wind up to 27 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Sun 20.9

⛈️

💧 52%

+13° +14°

Morning

⛈️

+13°

Day

⛈️

+14°

Evening

🌇

+14°

Night

🌙

+13°

Thunderstorm · precipitation 52% · wind up to 25 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Mon 21.9

🌦️

💧 42%

+11° +13°

Morning

🌦️

+12°

Day

🌦️

+13°

Evening

🌇

+13°

Night

🌙

+11°

Rain showers · precipitation 42% · wind up to 30 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Tue 22.9

🌦️

💧 35%

+10° +14°

Morning

🌦️

+11°

Day

🌦️

+14°

Evening

🌇

+13°

Night

🌙

+10°

Drizzle · precipitation 35% · wind up to 24 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Wed 23.9

🌦️

💧 35%

+10° +13°

Morning

🌦️

+11°

Day

🌦️

+13°

Evening

🌇

+12°

Night

🌙

+10°

Drizzle · precipitation 35% · wind up to 23 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Thu 24.9

⛅

💧 39%

+9° +14°

Morning

⛅

+11°

Day

⛅

+14°

Evening

🌇

+13°

Night

🌙

+9°

Partly cloudy · precipitation 39% · wind up to 17 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

▶

Fri 25.9

🌫️

💧 33%

+6° +14°

Morning

🌫️

+9°

Day

🌫️

+14°

Evening

🌇

+12°

Night

🌙

+6°

Fog · precipitation 33% · wind up to 15 km/h.
🧥 Cool. You'll need a warm jacket; it can get chilly in the evening.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏖️ Beach

0 / 100

for sea and sun · Bad

🏊 Swimming

0 / 100

water 16° · Bad

🏃 Running

51 / 100

comfort for running · Average

🧴 UV

moderate · low

☂️ Rain

41%

possible · moderate

✨ Stars

59 / 100

evening visibility · Average

🧺 Laundry drying

0 / 100

will dry outside · Bad

🚗 Car wash

46 / 100

better to wait · Average

🌫️ Air quality and pollen

Good air

European AQI

PM2.5: 3PM10: 5O₃: 35NO₂: 12 pollen: low

The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise

06:40

Sunset

19:51

Golden hour

18:56

Daylight

13 h (-6 min vs yesterday)

Sea temperature

+16°

🌊 calm, waves 0.1 m.

Helsinki climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

-2°

-6°

Jan

-3°

-7°

Feb

+1°

-4°

Mar

+7°

+0°

Apr

+13°

+6°

May

+17°

+11°

Jun

+21°

+15°

Jul

+20°

+14°

Aug

+15°

+10°

Sep

+8°

+5°

Oct

+3°

+0°

Nov

+0°

-3°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Sea	Precipitation	What to pack and what makes the month notable (events, nuances)
January	-2°	-6°	+0°	50 mm	Proper winter: -2° daytime, frost and short days. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+0°) — swimming is for the brave.
February	-3°	-7°	+0°	42 mm	The coldest stretch: -3° by day, full winter clothing required. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+0°) — swimming is for the brave. This is the coldest month of the year.
March	+1°	-4°	+1°	37 mm	Freezing: +1° by day, -4° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+1°) — swimming is for the brave.
April	+7°	+0°	+4°	37 mm	Winter weather: about +7° daytime, you need a warm coat and hat. 🧣 a warmer jacket. The water is cold (+4°) — swimming is for the brave.
May	+13°	+6°	+10°	44 mm	Cool weather: +13° by day, noticeably colder in the evening. 🧥 a warm jacket. The water is cold (+10°) — swimming is for the brave.
June	+17°	+11°	+16°	71 mm	Cool: around +17° by day, you'll need a warm layer. It's a rainy month (71 mm) — an umbrella is a must. 🙂 a sweater for the evening. The water is cold (+16°) — swimming is for the brave. The longest daylight hours of the year — more time for everything.
July	+21°	+15°	+19°	75 mm	Ideal weather: +21° daytime — neither hot nor cold. Frequent rain (75 mm over the month) — keep indoor backup plans. 🙂 a sweater for the evening. Sea at +19° — swimmable, refreshing. This is the hottest month of the year in Helsinki.
August	+20°	+14°	+20°	76 mm	The most pleasant season: +20° by day, comfortable all day long. One of the wettest months (76 mm): downpours can derail plans. 🙂 a sweater for the evening. Sea at +20° — swimmable, refreshing. Statistically the wettest month of the year.
September	+15°	+10°	+17°	58 mm	Cool: around +15° by day, you'll need a warm layer. 🧥 a warm jacket. The water is cold (+17°) — swimming is for the brave.
October	+8°	+5°	+11°	63 mm	Winter weather: about +8° daytime, you need a warm coat and hat. Frequent rain (63 mm over the month) — keep indoor backup plans. 🧥 a warm jacket. The water is cold (+11°) — swimming is for the brave.
November	+3°	+0°	+6°	63 mm	A cold month: +3° by day, long walks get uncomfortable. One of the wettest months (63 mm): downpours can derail plans. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+6°) — swimming is for the brave.
December	+0°	-3°	+2°	57 mm	Freezing: +0° by day, -3° at night — full winter gear, ice underfoot is common. ❄️ a warm jacket, a hat, non-slip shoes. The water is cold (+2°) — swimming is for the brave. The shortest daylight of the year — it gets dark early.

When to visit Helsinki

✅ Recommended time to visit

🌟 Best time: June, July, August

Daytime air+17…+21°

Sea temperature+16…+20°

Precipitationoften

Featurewhite nights

Why: comfortable +17…+21° by day, little rain.

⚠️ Doable, with caveats

🌤️ Shoulder season: January, February, March, April, May, September

Daytime air-3…+15°

Sea temperature+0…+17°

Precipitationoften

Why: cool (-3…+15°) — not beach season, but great for city sights and museums.

🔴 Not the best time

❄️ Cold season: October, November, December

Daytime air+0…+8°

Sea temperature+2…+11°

Precipitationoften

Why: cold and dark (+0…+8° by day, 6 h of daylight) — only if frost and short days don’t put you off.

Bottom line: the best time to visit Helsinki is June – August, and the most comfortable months are June, July, August. The toughest months to visit are October, November, December: cold and short days.