Climate averages 1991–2020
Mainz weather
in April.
A mild, moderately wet month: the 6th warmest and the 2nd driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Mainz: daytime highs average 15.0°C and nights cool to about 5.0°C. By daytime temperature it is the 6th warmest of the 12 months.
Expect about 45 mm of rain on roughly 10 days, which makes April a moderately wet month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 44 min on an average April day.
The nearest other city in this atlas is Wiesbaden (12 km away). In April its highs average 14.9°C, about as warm as Mainz, with 45 mm of rain.
Among the 120 cities listed in Germany, Mainz ranks joint 8th of 120 for the warmest April highs and joint 24th of 120 for the driest April (rainfall, lowest first). The mean April high of those 120 cities is 14.0°C; Mainz is 1.0°C warmer than that mean.
From April to May, average highs rise by 3.8°C to 18.8°C, and monthly rainfall rises from 45 mm to 62 mm.
The annual picture
April 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, selected | 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 | 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
April in nearby cities
- Wiesbaden in AprilGermany · 12 kmHigh 14.9°C · Low 5.5°C · 45 mm rain
- Darmstadt in AprilGermany · 29 kmHigh 14.7°C · Low 5.1°C · 51 mm rain
- Frankfurt am Main in AprilGermany · 32 kmHigh 14.9°C · Low 5.0°C · 44 mm rain
- Offenbach in AprilGermany · 37 kmHigh 14.9°C · Low 5.0°C · 44 mm rain
- Worms in AprilGermany · 39 kmHigh 15.2°C · Low 5.2°C · 41 mm rain
- Hanau am Main in AprilGermany · 48 kmHigh 14.8°C · Low 5.0°C · 49 mm rain
- Mannheim in AprilGermany · 56 kmHigh 15.4°C · Low 5.5°C · 44 mm rain
- Ludwigshafen am Rhein in AprilGermany · 57 kmHigh 15.5°C · Low 5.5°C · 44 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.