Climate averages 1991–2020
Mainz weather
in August.
A warm, moderately wet month: one of the warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Mainz: daytime highs average 24.5°C and nights cool to about 15.0°C. By daytime temperature it is one of the warmest months of the year.
Expect about 58 mm of rain on roughly 11 days, which makes August a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 28 min on an average August day.
The nearest other city in this atlas is Wiesbaden (12 km away). In August its highs average 24.2°C, about as warm as Mainz, with 58 mm of rain.
Among the 120 cities listed in Germany, Mainz ranks 7th of 120 for the warmest August highs and joint 9th of 120 for the driest August (rainfall, lowest first). The mean August high of those 120 cities is 22.9°C; Mainz is 1.6°C warmer than that mean.
From August to September, average highs fall by 4.6°C to 20.0°C, and monthly rainfall falls from 58 mm to 54 mm.
The annual picture
August 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
Mainz climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.4°C-0.6°C | -0.6°C | 49 | 11.0 | 8.69 h |
| February | 6.1°C-0.5°C | -0.5°C | 43 | 9.2 | 10.010 h |
| March | 10.3°C1.9°C | 1.9°C | 49 | 11.2 | 11.812 h |
| April | 15.0°C5.0°C | 5.0°C | 45 | 9.8 | 13.714 h |
| May | 18.8°C9.4°C | 9.4°C | 62 | 11.0 | 15.415 h |
| June | 22.3°C12.9°C | 12.9°C | 60 | 10.5 | 16.316 h |
| July | 24.5°C15.1°C | 15.1°C | 64 | 11.6 | 15.916 h |
| August, selected | 24.5°C15.0°C | 15.0°C | 58 | 10.6 | 14.514 h |
| September | 20.0°C11.4°C | 11.4°C | 54 | 9.3 | 12.713 h |
| October | 14.4°C7.3°C | 7.3°C | 55 | 10.8 | 10.811 h |
| November | 8.6°C3.3°C | 3.3°C | 54 | 11.5 | 9.19 h |
| December | 5.0°C0.4°C | 0.4°C | 62 | 12.8 | 8.28 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
August in nearby cities
- Wiesbaden in AugustGermany · 12 kmHigh 24.2°C · Low 15.2°C · 58 mm rain
- Darmstadt in AugustGermany · 29 kmHigh 24.3°C · Low 15.0°C · 59 mm rain
- Frankfurt am Main in AugustGermany · 32 kmHigh 24.4°C · Low 15.0°C · 53 mm rain
- Offenbach in AugustGermany · 37 kmHigh 24.4°C · Low 14.9°C · 53 mm rain
- Worms in AugustGermany · 39 kmHigh 24.8°C · Low 15.3°C · 52 mm rain
- Hanau am Main in AugustGermany · 48 kmHigh 24.3°C · Low 14.9°C · 58 mm rain
- Mannheim in AugustGermany · 56 kmHigh 25.0°C · Low 15.6°C · 53 mm rain
- Ludwigshafen am Rhein in AugustGermany · 57 kmHigh 25.2°C · Low 15.7°C · 53 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 Mainz) is explained once on the Mainz year overview and on the Sources, method and limits page.
Wiesbaden lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.