Climate averages 1991–2020
Basel weather
in July.
A warm, wet month: one of the warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Basel: daytime highs average 24.5°C and nights cool to about 14.8°C. By daytime temperature it is one of the warmest months of the year.
Expect about 121 mm of rain on roughly 15 days, which makes July a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 34 min on an average July day.
The nearest other city in this atlas is Mulhouse (28 km away). In July its highs average 24.2°C, about as warm as Basel, with 81 mm of rain.
Among the 8 cities listed in Switzerland, Basel ranks 1st of 8 for the warmest July highs and 4th of 8 for the driest July (rainfall, lowest first). The mean July high of those 8 cities is 23.0°C; Basel is 1.5°C warmer than that mean.
From July to August, average highs stay level at 24.5°C, and monthly rainfall rises from 121 mm to 125 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Basel climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.4°C-1.7°C | -1.7°C | 80 | 13.5 | 8.99 h |
| February | 6.9°C-1.5°C | -1.5°C | 73 | 11.7 | 10.210 h |
| March | 11.1°C1.4°C | 1.4°C | 83 | 13.5 | 11.912 h |
| April | 15.0°C4.6°C | 4.6°C | 90 | 14.1 | 13.614 h |
| May | 18.7°C8.9°C | 8.9°C | 129 | 16.8 | 15.115 h |
| June | 22.3°C12.7°C | 12.7°C | 118 | 15.8 | 15.916 h |
| July, selected | 24.5°C14.8°C | 14.8°C | 121 | 15.4 | 15.616 h |
| August | 24.5°C14.9°C | 14.9°C | 125 | 15.1 | 14.314 h |
| September | 20.1°C10.8°C | 10.8°C | 95 | 12.6 | 12.613 h |
| October | 15.4°C6.7°C | 6.7°C | 97 | 13.2 | 10.911 h |
| November | 9.4°C2.1°C | 2.1°C | 94 | 13.0 | 9.49 h |
| December | 5.8°C-0.8°C | -0.8°C | 101 | 14.1 | 8.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Mulhouse in JulyFrance · 28 kmHigh 24.2°C · Low 15.1°C · 81 mm rain
- Freiburg in JulyGermany · 53 kmHigh 24.4°C · Low 15.5°C · 89 mm rain
- Bern in JulySwitzerland · 69 kmHigh 21.8°C · Low 12.9°C · 104 mm rain
- Zürich in JulySwitzerland · 76 kmHigh 23.3°C · Low 14.6°C · 146 mm rain
- Luzern in JulySwitzerland · 79 kmHigh 23.1°C · Low 14.5°C · 212 mm rain
- Winterthur in JulySwitzerland · 87 kmHigh 23.1°C · Low 14.4°C · 106 mm rain
- Villingen-Schwenningen in JulyGermany · 89 kmHigh 21.2°C · Low 12.6°C · 138 mm rain
- Strasbourg in JulyFrance · 115 kmHigh 24.5°C · Low 15.3°C · 83 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Basel) is explained once on the Basel year overview and on the Sources, method and limits page.