Climate averages 1991–2020
Gießen weather
in May.
A mild, moderately wet month: the 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Gießen: daytime highs average 17.9°C and nights cool to about 8.9°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 59 mm of rain on roughly 11 days, which makes May a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 15 h 27 min on an average May day.
The nearest other city in this atlas is Marburg an der Lahn (26 km away). In May its highs average 17.4°C, 0.5°C cooler than Gießen, with 58 mm of rain.
Among the 120 cities listed in Germany, Gießen ranks joint 62nd of 120 for the warmest May highs and joint 16th of 120 for the driest May (rainfall, lowest first). The mean May high of those 120 cities is 17.9°C; Gießen is 0.1°C warmer than that mean.
From May to June, average highs rise by 3.2°C to 21.2°C, and monthly rainfall rises from 59 mm to 61 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
Gießen climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.0°C-0.6°C | -0.6°C | 56 | 11.3 | 8.59 h |
| February | 5.4°C-0.7°C | -0.7°C | 46 | 9.7 | 10.010 h |
| March | 9.5°C1.5°C | 1.5°C | 51 | 11.1 | 11.812 h |
| April | 14.1°C4.6°C | 4.6°C | 46 | 9.8 | 13.814 h |
| May, selected | 17.9°C8.9°C | 8.9°C | 59 | 10.9 | 15.515 h |
| June | 21.2°C12.2°C | 12.2°C | 61 | 10.7 | 16.416 h |
| July | 23.3°C14.3°C | 14.3°C | 67 | 11.8 | 16.016 h |
| August | 23.2°C14.2°C | 14.2°C | 60 | 10.3 | 14.515 h |
| September | 18.9°C10.8°C | 10.8°C | 55 | 9.1 | 12.713 h |
| October | 13.6°C7.0°C | 7.0°C | 55 | 10.9 | 10.811 h |
| November | 8.0°C3.3°C | 3.3°C | 56 | 11.1 | 9.09 h |
| December | 4.5°C0.3°C | 0.3°C | 67 | 13.1 | 8.18 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
- Marburg an der Lahn in MayGermany · 26 kmHigh 17.4°C · Low 8.3°C · 58 mm rain
- Frankfurt am Main in MayGermany · 52 kmHigh 18.7°C · Low 9.4°C · 63 mm rain
- Hanau am Main in MayGermany · 53 kmHigh 18.7°C · Low 9.4°C · 62 mm rain
- Offenbach in MayGermany · 54 kmHigh 18.7°C · Low 9.4°C · 63 mm rain
- Siegen in MayGermany · 56 kmHigh 16.9°C · Low 8.4°C · 72 mm rain
- Wiesbaden in MayGermany · 64 kmHigh 18.7°C · Low 9.8°C · 62 mm rain
- Mainz in MayGermany · 73 kmHigh 18.8°C · Low 9.4°C · 62 mm rain
- Darmstadt in MayGermany · 80 kmHigh 18.6°C · Low 9.5°C · 75 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 Gießen) is explained once on the Gießen year overview and on the Sources, method and limits page.