Basel, Switzerland — Weather in August 2026

Climate Overview

Basel, Switzerland in August has warm conditions, with highs averaging 26°C (79°F). Rain falls on about 13 days this month. Temperatures drop noticeably between day and night.

This month falls at the end of Summer.

Temperatures remain fairly steady throughout August, with daily highs around 25°C (77°F).

August sees fairly even rainfall, totalling about 108 mm across the month.

Expect around 10.8h of sunshine at the start of August, decreasing to 9.1h by the end.

The warmest days tend to fall around the 14th, averaging 27.8°C (82°F).

Temperatures begin dropping heading into September.

Monthly August Averages

Temperature

26°C / 16°C

Feels Like

27°C / 16°C

Rain

13 days · 109 mm

Sunshine

10.7h / day

Humidity

69% — Humid

Wind

10 km/h

Wind Direction

SW (215°)

Gusts

28 km/h

Daylight

14.2 h

Cloud Cover

54%

Clear Sky Days

4.7

UV Index

5.7 — High

Dew Point

15°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 06:27

Daylight 14.3h

Sunset 20:45

What to Expect

Daytime temperatures around 26°C (79°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.

2 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	6°C / -1°C	3°C / -5°C	15days (109 mm) Wet	4.7h Fair	83% Humid	1.5 Low	Poor	View Details
February	9°C / 0°C	6°C / -4°C	12days (73 mm) Wet	6.1h Fair	79% Humid	2.2 Moderate	Poor	View Details
March	12°C / 2°C	9°C / -1°C	13days (76 mm) Wet	8.1h Good	75% Muggy	3.6 Moderate	Poor	View Details
April	16°C / 5°C	14°C / 2°C	13days (89 mm) Wet	9.9h Good	73% Muggy	4.7 Moderate	Fair	View Details
May	19°C / 9°C	18°C / 7°C	17days (129 mm) Wet	10.1h Excellent	75% Muggy	5.5 High	Good	View Details
June best	24°C / 14°C	25°C / 14°C	16days (130 mm) Wet	11.7h Excellent	72% Muggy	6.5 High	Excellent	View Details
July best	26°C / 16°C	27°C / 16°C	14days (109 mm) Wet	12.1h Excellent	66% Muggy	6.4 High	Excellent	View Details
August best	26°C / 16°C	27°C / 16°C	13days (109 mm) Wet	10.7h Excellent	69% Muggy	5.7 High	Excellent	View Details
September best	22°C / 12°C	21°C / 11°C	12days (87 mm) Wet	9h Good	74% Muggy	4.3 Moderate	Excellent	View Details
October best	17°C / 7°C	16°C / 6°C	13days (89 mm) Wet	6.6h Fair	82% Humid	2.7 Moderate	Good	View Details
November	10°C / 2°C	8°C / -1°C	14days (98 mm) Wet	5.1h Fair	85% Humid	1.6 Low	Poor	View Details
December	7°C / 0°C	4°C / -4°C	14days (95 mm) Wet	4.2h Fair	86% Very Muggy	1.2 Low	Poor	View Details

What to Wear

Summer clothing like shorts, t-shirts, and sundresses will be comfortable. Bring a light cardigan for air-conditioned spaces.

Temperatures drop significantly at night, so pack layers you can add or remove throughout the day.

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

Packing List

UmbrellaWaterproof jacketBreathable clothingSunscreen (SPF 30+)Sun hatSunglassesComfortable walking shoes

Frequently Asked Questions

Expand all

Is August a good time to visit Basel?

August is typically excellent for visiting Basel, with average highs of 26°C (79°F) and around 13 rainy days. Basel, Switzerland in August has warm conditions, with highs averaging 26°C (79°F). Rain falls on about 13 days this mon

Does it rain a lot in Basel in August?

Basel typically sees around 13 rainy days in August with 109 mm (4.3 in) of total rainfall. Pack a waterproof jacket.

Does it get cold at night in Basel in August?

Evenings in Basel during August are mild at 16°C (60°F). A light cardigan is usually enough.

What should I pack for Basel in August?

With highs of 26°C (79°F) and lows of 16°C (60°F) in August, we recommend: Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. Comfortable walking shoes are essential.

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

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

What is the UV index in Basel in August?

The average UV index in Basel during August is 6 (high). Wear sunscreen SPF 30+, a hat, and sunglasses. Limit direct sun exposure between 10 AM and 4 PM.

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

Basel gets approximately 14 hours of daylight per day in August, with around 11 hours of sunshine.

Does it snow in Basel in August?

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

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