UTC Offset
UTC+02:00
Aarau, Switzerland Snapshot 2026
Where is Aarau?
Aarau, Switzerland
- Continent
- Europe
- Country
- Switzerland
- City
- Aarau
- Population
- 21.5K
- Coordinates
- 47.39°, 8.04°
Aarau is a city in Switzerland with a population of approximately 21.5K. Average temperatures range from -1°C (30°F) in January to 25°C (77°F) in July. The best time to visit is June, July, August, September, October.
Time in Aarau right now
Open full time & time zone page 22:50 50
Tuesday, June 30, 2026
IANA time zone
Europe/Zurich
Daylight saving
DST in effect
CET / CEST
Next DST change
October 25
backward -1h
Live weather in Aarau
Daylight in Aarau today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 54m
Climate normals for Aarau
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May
Wet June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 5°C / -1°C | 2°C / -5°C | 15days (130 mm) Wet | 4.9h Fair | 83% Humid | 1.5 Low | Poor | View Details |
| February | 9°C / 1°C | 5°C / -3°C | 12days (85 mm) Wet | 6.3h Fair | 79% Humid | 2.2 Moderate | Poor | View Details |
| March | 12°C / 2°C | 9°C / -1°C | 13days (93 mm) Wet | 8.2h Good | 75% Muggy | 3.5 Moderate | Poor | View Details |
| April | 15°C / 5°C | 13°C / 3°C | 14days (97 mm) Wet | 10h Excellent | 73% Muggy | 4.9 Moderate | Fair | View Details |
| May | 18°C / 9°C | 18°C / 8°C | 18days (152 mm) Wet | 10.2h Excellent | 76% Humid | 5.7 High | Wet | View Details |
| June best | 24°C / 14°C | 25°C / 15°C | 17days (154 mm) Wet | 11.8h Excellent | 74% Muggy | 6.6 High | Excellent | View Details |
| July best | 25°C / 16°C | 26°C / 16°C | 16days (134 mm) Wet | 12.1h Excellent | 73% Muggy | 6.5 High | Excellent | View Details |
| August best | 25°C / 16°C | 27°C / 17°C | 15days (141 mm) Wet | 10.7h Excellent | 75% Muggy | 5.6 High | Excellent | View Details |
| September best | 21°C / 12°C | 21°C / 12°C | 13days (107 mm) Wet | 9h Good | 79% Humid | 4.2 Moderate | Excellent | View Details |
| October best | 16°C / 8°C | 15°C / 6°C | 13days (103 mm) Wet | 6.7h Fair | 83% Humid | 2.8 Moderate | Good | View Details |
| November | 9°C / 3°C | 7°C / 0°C | 15days (105 mm) Wet | 5.2h Fair | 86% Very Muggy | 1.6 Low | Poor | View Details |
| December | 6°C / 0°C | 3°C / -3°C | 14days (120 mm) Wet | 4.4h Fair | 86% Very Muggy | 1.2 Low | Poor | View Details |
Monthly Temperatures
High Low
Line chart showing monthly temperatures. Jan: 5°C / -1°C . Feb: 9°C / 1°C . Mar: 12°C / 2°C . Apr: 15°C / 5°C . May: 18°C / 9°C . Jun: 24°C / 14°C . Jul: 25°C / 16°C . Aug: 25°C / 16°C . Sep: 21°C / 12°C . Oct: 16°C / 8°C . Nov: 9°C / 3°C . Dec: 6°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 130 mm. Feb: 85 mm. Mar: 93 mm. Apr: 97 mm. May: 152 mm. Jun: 154 mm. Jul: 134 mm. Aug: 141 mm. Sep: 107 mm. Oct: 103 mm. Nov: 105 mm. Dec: 120 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 83%. Feb: 79%. Mar: 75%. Apr: 73%. May: 76%. Jun: 74%. Jul: 73%. Aug: 75%. Sep: 79%. Oct: 83%. Nov: 86%. Dec: 86%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 14 km/h . Mar: 13 km/h . Apr: 13 km/h . May: 12 km/h . Jun: 11 km/h . Jul: 11 km/h . Aug: 10 km/h . Sep: 10 km/h . Oct: 11 km/h . Nov: 11 km/h . Dec: 12 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 2. Mar: UV 4. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 4. Oct: UV 3. Nov: UV 2. Dec: UV 1.
Frequently Asked Questions
Aarau has a population of approximately 21.5K.
The best months to visit Aarau are June, July, August, September, October, when temperatures are pleasant and rainfall is lower.
Aarau receives approximately 1421mm of rainfall annually across 175 rainy days.
Aarau is located in Switzerland, in the Europe region.