Mainz Climate by Month
Mainz, Rheinland-Pfalz, Germany
Warm summers and cool winters, with rain spread through the year.
Mainz has warm summers and cool winters, with rain spread through the year. Expect highs of 80°F (27°C) in July and 41°F (5°C) in January, with the coldest nights (January) near 32°F (0°C). It gets 23 in (583 mm) of rain a year, spread across the months.
- Warmest month
- 80°F(27°C)
- Average high, July
- Coldest nights
- 32°F(0°C)
- Average low, January
- Rain per year
- 23 in(583 mm)
- No clear rainy season
- Humidity
- 73%
- Sunniest: June
Best and worst months in Mainz
Best for weatherThe most comfortable weather comes in June and August, with highs around 77°F (25°C) and about 2.0 in (51 mm) of rain a month.
Least pleasantDecember and January are the least pleasant; December is the coldest, with highs of only 42°F (6°C).
Comfort combines how close the afternoon high is to 75°F (24°C) with how much rain falls and how humid it is. See where the weather is best in June.
Temperature and rain through the year
Highs and lows (°F)
Average highAverage low
Rain (in per month)
Mainz weather by month
| Month | High | Low | Rain | Humidity | Sun |
|---|---|---|---|---|---|
| JanJanuary | 41°F(5°C) | 32°F(0°C) | 1.6 in(41 mm) | 81% | 0.8 |
| FebFebruary | 44°F(7°C) | 32°F(0°C) | 1.5 in(38 mm) | 76% | 1.5 |
| MarMarch | 53°F(12°C) | 37°F(3°C) | 1.5 in(39 mm) | 70% | 2.6 |
| AprApril | 62°F(17°C) | 42°F(6°C) | 1.4 in(36 mm) | 60% | 4.2 |
| MayMay | 70°F(21°C) | 49°F(10°C) | 2.2 in(55 mm) | 63% | 5.1 |
| JunJuneBest | 76°F(25°C) | 55°F(13°C) | 2.2 in(56 mm) | 65% | 5.5 |
| JulJuly | 80°F(27°C) | 59°F(15°C) | 2.8 in(70 mm) | 61% | 5.5 |
| AugAugustBest | 79°F(26°C) | 58°F(14°C) | 1.8 in(46 mm) | 68% | 4.7 |
| SepSeptember | 69°F(21°C) | 51°F(11°C) | 1.9 in(47 mm) | 73% | 3.2 |
| OctOctober | 58°F(15°C) | 44°F(7°C) | 2.1 in(53 mm) | 85% | 1.8 |
| NovNovember | 48°F(9°C) | 38°F(4°C) | 1.9 in(47 mm) | 84% | 0.9 |
| DecDecember | 42°F(6°C) | 34°F(1°C) | 2.2 in(55 mm) | 90% | 0.6 |
1991–2020 averages. Sun is solar radiation in kWh/m² per day. Highlighted: the most comfortable months.
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