Climate averages 1991–2020
Frankfurt am Main weather
in May.
A mild, moderately wet month: the 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Frankfurt am Main: daytime highs average 18.7°C and nights cool to about 9.4°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 63 mm of rain on roughly 11 days, which makes May a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 24 min on an average May day.
The nearest other city in this atlas is Offenbach (6 km away). In May its highs average 18.7°C, about as warm as Frankfurt am Main, with 63 mm of rain.
Among the 120 cities listed in Germany, Frankfurt am Main ranks joint 13th of 120 for the warmest May highs and joint 57th of 120 for the driest May (rainfall, lowest first). The mean May high of those 120 cities is 17.9°C; Frankfurt am Main is 0.9°C warmer than that mean.
From May to June, average highs rise by 3.4°C to 22.2°C, and monthly rainfall falls from 63 mm to 55 mm.
The annual picture
May 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
Frankfurt am Main 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 | 56 | 11.7 | 8.69 h |
| February | 6.0°C-0.5°C | -0.5°C | 49 | 10.1 | 10.010 h |
| March | 10.2°C1.9°C | 1.9°C | 54 | 11.3 | 11.812 h |
| April | 14.9°C5.0°C | 5.0°C | 44 | 9.6 | 13.714 h |
| May, selected | 18.7°C9.4°C | 9.4°C | 63 | 10.5 | 15.415 h |
| June | 22.2°C12.9°C | 12.9°C | 55 | 9.9 | 16.316 h |
| July | 24.4°C15.1°C | 15.1°C | 60 | 10.8 | 15.916 h |
| August | 24.4°C15.0°C | 15.0°C | 53 | 9.2 | 14.514 h |
| September | 19.9°C11.3°C | 11.3°C | 52 | 8.5 | 12.713 h |
| October | 14.3°C7.3°C | 7.3°C | 54 | 10.5 | 10.811 h |
| November | 8.6°C3.3°C | 3.3°C | 58 | 11.1 | 9.19 h |
| December | 5.0°C0.4°C | 0.4°C | 68 | 13.9 | 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
May in nearby cities
- Offenbach in MayGermany · 6 kmHigh 18.7°C · Low 9.4°C · 63 mm rain
- Hanau am Main in MayGermany · 17 kmHigh 18.7°C · Low 9.4°C · 62 mm rain
- Darmstadt in MayGermany · 27 kmHigh 18.6°C · Low 9.5°C · 75 mm rain
- Wiesbaden in MayGermany · 32 kmHigh 18.7°C · Low 9.8°C · 62 mm rain
- Mainz in MayGermany · 32 kmHigh 18.8°C · Low 9.4°C · 62 mm rain
- Gießen in MayGermany · 52 kmHigh 17.9°C · Low 8.9°C · 59 mm rain
- Worms in MayGermany · 59 kmHigh 19.1°C · Low 9.6°C · 61 mm rain
- Mannheim in MayGermany · 71 kmHigh 19.3°C · Low 9.9°C · 67 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 Frankfurt am Main) is explained once on the Frankfurt am Main year overview and on the Sources, method and limits page.
Offenbach lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.