Koblenz climate
Koblenz (Rheinland-Pfalz, Germany) has a temperate oceanic climate (Köppen Cfb). The average temperature over the year is 11 °C51 °F, and about 785 mm31 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Koblenz climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 440 | −130 | 235 | 702.8 |
| Feb | 642 | −130 | 236 | 572.2 |
| Mar | 1050 | 134 | 642 | 572.2 |
| Apr | 1560 | 541 | 1050 | 471.8 |
| May | 1967 | 948 | 1457 | 712.8 |
| Jun | 2374 | 1355 | 1864 | 702.7 |
| Jul | 2679 | 1559 | 2069 | 753.0 |
| Aug | 2578 | 1458 | 2068 | 763.0 |
| Sep | 2170 | 1050 | 1660 | 582.3 |
| Oct | 1559 | 744 | 1151 | 602.4 |
| Nov | 948 | 338 | 643 | 692.7 |
| Dec | 541 | 032 | 337 | 763.0 |
| Year | 2679 | −130 | 1151 | 78531 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 94% | 79% | 0.8 | 8:29 |
| Feb | 91% | 76% | 1.5 | 9:59 |
| Mar | 86% | 70% | 2.7 | 11:43 |
| Apr | 79% | 66% | 4.2 | 13:43 |
| May | 78% | 71% | 4.9 | 15:26 |
| Jun | 74% | 71% | 5.4 | 16:24 |
| Jul | 68% | 68% | 5.2 | 16:00 |
| Aug | 69% | 67% | 4.4 | 14:29 |
| Sep | 74% | 64% | 3.3 | 12:32 |
| Oct | 86% | 71% | 1.9 | 10:37 |
| Nov | 93% | 79% | 0.9 | 8:54 |
| Dec | 95% | 81% | 0.6 | 8:02 |
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 Koblenz is like
The warmest month is July, with an average high of 26 °C79 °F and a low of 15 °C59 °F. The coldest is January, when highs average 4 °C40 °F and lows −1 °C30 °F. Seasons are strongly marked: the warmest month is on average 18.8 °C33.8 °F warmer than the coldest.
Annual precipitation is moderate at about 785 mm31 in. Rain is spread fairly evenly through the year. The wettest month is August (76 mm3.0 in), the driest is April (47 mm1.8 in).
Relative humidity ranges from 68% in July to 95% in December. The clearest skies (lowest average cloud amount, 64%) are typical of September. Average wind speed near the ground ranges from 8 km/h (5 mph) in August to 12 km/h (8 mph) in January. Daylight lasts from about 8.0 hours in December to 16.4 hours in June.
A lasting snow cover is typical in December–February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in February, about 13 cm).
Best time to visit Koblenz
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May–September: average highs of 19 °C67 °F to 26 °C79 °F with 58 mm2.3 in to 76 mm3.0 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 4 °C40 °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 Koblenz
- Winter (December–February) — highs 440 to 6 °C42 °F, lows −130 to 0 °C32 °F, about 68 mm2.7 in of precipitation a month. Pack a warm coat, layers and closed shoes and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1050 to 19 °C67 °F, lows 134 to 9 °C48 °F, about 58 mm2.3 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Summer (June–August) — highs 2374 to 26 °C79 °F, lows 1355 to 15 °C59 °F, about 74 mm2.9 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
- Autumn (September–November) — highs 948 to 21 °C70 °F, lows 338 to 10 °C50 °F, about 62 mm2.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Koblenz compares
Compared with Bonn, about 54 km to the northwest, Koblenz has practically the same average temperature and receives a similar amount of precipitation. The difference is largest in December (0.6 °C1 °F cooler).
Of the 62 places in Germany covered by World Climates, Koblenz is the 7th warmest by annual mean temperature and the 21st 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: Nancy (France, Cfb), Metz (France, Cfb) and Dijon (France, Cfb).
Nearby places
- Bonn 54 km · 11 °C51 °F · 771 mm30 in
- Wiesbaden 56 km · 10 °C51 °F · 701 mm28 in
- Mainz 65 km · 11 °C51 °F · 701 mm28 in
- Siegen 66 km · 9 °C48 °F · 910 mm36 in
- Bergisch Gladbach 77 km · 10 °C51 °F · 791 mm31 in
- Köln 78 km · 11 °C51 °F · 791 mm31 in
- Frankfurt am Main 83 km · 11 °C51 °F · 669 mm26 in
- Darmstadt 93 km · 10 °C51 °F · 669 mm26 in
Frequently asked questions
What is the warmest month in Koblenz?
July is the warmest month in Koblenz, with an average high of 26 °C (79 °F) and an average low of 15 °C (59 °F).
What is the coldest month in Koblenz?
January is the coldest month, with an average high of 4 °C (40 °F) and an average low of -1 °C (30 °F).
When does it rain the most in Koblenz?
August is the wettest month with about 76 mm (3.0 in) of precipitation; April is the driest with about 47 mm (1.8 in).
What is the best time to visit Koblenz?
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.
The grid cell’s average elevation is 294 m, while Koblenz lies at about 75 m. Temperatures on this page were therefore adjusted by +1.4 °C2.6 °F using the standard lapse rate of 6.5 °C per 1,000 m.