Hannover climate
Hannover (Lower Saxony, Germany) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 10 °C49 °F, and about 726 mm29 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Hannover climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 338 | −228 | 133 | 692.7 | 19 |
| Feb | 540 | −229 | 134 | 502.0 | 18 |
| Mar | 948 | 032 | 440 | 512.0 | 14 |
| Apr | 1558 | 439 | 949 | 381.5 | 4 |
| May | 1966 | 847 | 1356 | 612.4 | 0 |
| Jun | 2271 | 1253 | 1762 | 622.4 | 0 |
| Jul | 2475 | 1457 | 1966 | 833.3 | 0 |
| Aug | 2374 | 1456 | 1965 | 672.7 | 0 |
| Sep | 2067 | 1050 | 1558 | 562.2 | 0 |
| Oct | 1457 | 643 | 1050 | 592.3 | 2 |
| Nov | 847 | 337 | 542 | 612.4 | 7 |
| Dec | 439 | 031 | 235 | 682.7 | 16 |
| Year | 2475 | −228 | 1049 | 72629 | 78 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 93% | 81% | 0.7 | 8:11 |
| Feb | 89% | 76% | 1.4 | 9:49 |
| Mar | 84% | 70% | 2.5 | 11:42 |
| Apr | 77% | 63% | 4.1 | 13:51 |
| May | 75% | 68% | 4.9 | 15:42 |
| Jun | 75% | 71% | 5.2 | 16:46 |
| Jul | 74% | 69% | 5.0 | 16:20 |
| Aug | 74% | 68% | 4.2 | 14:40 |
| Sep | 77% | 67% | 3.1 | 12:34 |
| Oct | 85% | 71% | 1.8 | 10:30 |
| Nov | 92% | 79% | 0.8 | 8:39 |
| Dec | 93% | 81% | 0.5 | 7:42 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Hannover is like
The warmest month is July, with an average high of 24 °C75 °F and a low of 14 °C57 °F. The coldest is January, when highs average 3 °C38 °F and lows −2 °C28 °F. Seasons are strongly marked: the warmest month is on average 18.3 °C33 °F warmer than the coldest.
Annual precipitation is moderate at about 726 mm29 in. The wettest three-month stretch is June–August, which brings 29% of the annual total. The wettest month is July (83 mm3.3 in), the driest is April (38 mm1.5 in).
Relative humidity ranges from 74% in July to 93% in December. The clearest skies (lowest average cloud amount, 63%) are typical of April. Average wind speed near the ground ranges from 9 km/h (6 mph) in August to 14 km/h (8 mph) in January. Daylight lasts from about 7.7 hours in December to 16.8 hours in June.
A lasting snow cover is typical in January and February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 13 cm).
Best time to visit Hannover
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 19 °C66 °F to 24 °C75 °F with 56 mm2.2 in to 83 mm3.3 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 3 °C38 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Hannover
- Winter (December–February) — highs 338 to 5 °C40 °F, lows −228 to 0 °C31 °F, about 62 mm2.5 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 948 to 19 °C66 °F, lows 032 to 8 °C47 °F, about 50 mm2.0 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2271 to 24 °C75 °F, lows 1253 to 14 °C57 °F, about 71 mm2.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Autumn (September–November) — highs 847 to 20 °C67 °F, lows 337 to 10 °C50 °F, about 59 mm2.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Hannover compares
Compared with Bremen, about 100 km to the northwest, Hannover has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in June (0.6 °C1.2 °F warmer).
Of the 62 places in Germany covered by World Climates, Hannover is the 36th warmest by annual mean temperature and the 40th wettest by annual precipitation. See all of them on the Germany climate page.
Places in other countries with the most similar temperature and rainfall pattern: Luxembourg (Luxembourg, Cfb), Enschede (The Netherlands, Cfb) and Apeldoorn (The Netherlands, Cfb).
Nearby places
- Hildesheim 29 km · 10 °C49 °F · 740 mm29 in
- Salzgitter 52 km · 10 °C49 °F · 718 mm28 in
- Braunschweig 55 km · 9 °C49 °F · 713 mm28 in
- Bielefeld 90 km · 10 °C49 °F · 795 mm31 in
- Göttingen 94 km · 10 °C49 °F · 742 mm29 in
- Paderborn 99 km · 10 °C50 °F · 796 mm31 in
- Bremen 100 km · 9 °C49 °F · 752 mm30 in
- Osnabrück 115 km · 10 °C49 °F · 724 mm29 in
Frequently asked questions
What is the warmest month in Hannover?
July is the warmest month in Hannover, with an average high of 24 °C (75 °F) and an average low of 14 °C (57 °F).
What is the coldest month in Hannover?
January is the coldest month, with an average high of 3 °C (38 °F) and an average low of -2 °C (28 °F).
When does it rain the most in Hannover?
July is the wettest month with about 83 mm (3.3 in) of precipitation; April is the driest with about 38 mm (1.5 in).
What is the best time to visit Hannover?
Judging by long-term averages, the most comfortable months are May–September.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.