Vantaa, Finland — Weather in August 2026

Climate Overview

Vantaa, Finland in August has warm conditions, with highs averaging 20.3°C (69°F). Rain falls on about 14 days this month. Sea temperature stays cool at 19.6°C (67°F).

This month falls at the end of Summer.

Daily highs in August gradually drop from around 21°C (70°F) at the start to 19°C (66°F) by month's end.

August sees fairly even rainfall, totalling about 86 mm across the month.

Expect around 12.0h of sunshine at the start of August, decreasing to 8.5h by the end.

The warmest days tend to fall around the 7th, averaging 21.3°C (70°F).

Compared to July, this month is about 2°C cooler with 1 more rainy days. Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

20°C / 14°C

Feels Like

19°C / 13°C

Rain

14 days · 86 mm

Sunshine

11h / day

Humidity

79% — Humid

Wind

18 km/h

Wind Direction

SW (223°)

Gusts

37 km/h

Daylight

15.6 h

Cloud Cover

65%

Clear Sky Days

1.3

UV Index

4.3 — Moderate

Sea Temperature

20°C

Dew Point

13°C — Comfortable

Moon Phase

Waxing Crescent · 3%

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

HighLow

Daily Precipitation

Rainfall

Daily Sunshine

Sunshine

Daily Wind Speed

Wind Speed

Sun Position

Sunrise 05:33

Daylight 15.7h

Sunset 21:18

What to Expect

Daytime temperatures around 20°C (69°F) are ideal for full-day outdoor exploration. Keep afternoons flexible as tropical showers are common — they typically clear within an hour.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

Month	Temp	Feels Like	Rain	Sun	Humidity	UV	Status	Details
January	-2°C / -6°C	-7°C / -11°C	13days (62 mm) Wet	1.2h Poor	89% Very Muggy	0.4 Low	Poor	View Details
February	-1°C / -6°C	-6°C / -11°C	10days (52 mm) Wet	3.5h Poor	87% Very Muggy	1.1 Low	Poor	View Details
March	2°C / -4°C	-2°C / -9°C	9days (38 mm) Wet	6.8h Fair	83% Humid	2.3 Moderate	Poor	View Details
April	8°C / 0°C	4°C / -4°C	9days (45 mm) Wet	10.2h Excellent	74% Muggy	3.4 Moderate	Poor	View Details
May best	16°C / 6°C	13°C / 3°C	8days (44 mm) Wet	13.1h Excellent	66% Muggy	5.2 High	Good	View Details
June best	21°C / 12°C	19°C / 10°C	10days (64 mm) Wet	14.2h Excellent	66% Muggy	5.5 High	Good	View Details
July best	22°C / 14°C	21°C / 14°C	13days (89 mm) Wet	13.3h Excellent	74% Muggy	5.2 High	Excellent	View Details
August best	20°C / 14°C	19°C / 13°C	14days (86 mm) Wet	11h Excellent	79% Humid	4.3 Moderate	Excellent	View Details
September best	16°C / 10°C	14°C / 8°C	11days (68 mm) Wet	7.9h Good	83% Humid	3.1 Moderate	Good	View Details
October	9°C / 5°C	6°C / 1°C	13days (67 mm) Wet	4.2h Fair	87% Very Muggy	1.4 Low	Poor	View Details
November	4°C / 1°C	0°C / -4°C	13days (59 mm) Wet	1.6h Poor	90% Very Muggy	0.5 Low	Poor	View Details
December	0°C / -3°C	-4°C / -8°C	13days (59 mm) Wet	0.8h Poor	90% Very Muggy	0.3 Low	Poor	View Details

What to Wear

Dress in layers — a mix of long sleeves, light sweaters, and a versatile jacket works best for changeable conditions.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

UmbrellaWaterproof jacketWaterproof shoesSunscreen (SPF 30+)Sunglasses

Frequently Asked Questions

Expand all

Is August a good time to visit Vantaa?

August is typically excellent for visiting Vantaa, with average highs of 20°C (69°F) and around 14 rainy days. Vantaa, Finland in August has warm conditions, with highs averaging 20.3°C (69°F). Rain falls on about 14 days this mont

Does it rain a lot in Vantaa in August?

Vantaa typically sees around 14 rainy days in August with 86 mm (3.4 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Vantaa in August?

Evenings in Vantaa during August are mild at 14°C (57°F). A light cardigan is usually enough.

What should I pack for Vantaa in August?

With highs of 20°C (69°F) and lows of 14°C (57°F) in August, we recommend: Umbrella, Waterproof jacket, Waterproof shoes, Sunscreen (SPF 30+), Sunglasses. Comfortable walking shoes are essential.

Is August among the best months weather-wise in Vantaa?

Yes, August offers some of the best weather conditions in Vantaa with comfortable temperatures and lower chances of rain.

What is the UV index in Vantaa in August?

The average UV index in Vantaa during August is 4 (moderate). Sunscreen and sunglasses are recommended during midday hours.

How many hours of daylight are there in Vantaa in August?

Vantaa gets approximately 16 hours of daylight per day in August, with around 11 hours of sunshine.

Does it snow in Vantaa in August?

Snow is uncommon in Vantaa during August based on 10-year climate averages.

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