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Koblenz, Rheinland-Pfalz Weather by Month and Climate Averages
Monthly normals · Rain · Snow
Sunshine · Freeze dates · Records · Best time to visit
What is the weather like in Koblenz, Rheinland-Pfalz?
Koblenz, Rheinland-Pfalz gets 786 mm of precipitation a year over about 170 rainy days. July is the warmest month (average high 24°C) and January the coldest (average low -1°C).
Oceanic climate
Koblenz, Rheinland-Pfalz has warm summers and chilly winters. Daytime highs range from about 4°C in January to 24°C in July. December is usually the wettest month. The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.
| Season | Months | Avg low | Avg high |
|---|---|---|---|
| Winter | Dec–Feb | -1° | 5° |
| Spring | Mar–May | 4° | 14° |
| Summer | Jun–Aug | 12° | 23° |
| Autumn | Sep–Nov | 6° | 14° |
How much rain does Koblenz get?
Koblenz gets 786 mm of precipitation in an average year, spread over about 170 days with measurable rain. That is more rainy days than 56% of Germany.
December is the wettest month, with 88 mm. April is the driest, with 38 mm. December has the most rainy days, about 19.
The longest dry spell in the last five years lasted 15 days, to March 12, 2022.
From October 2025 to September 2026 Koblenz got 639 mm of rain, against a normal of 786 mm for those months. February 2026 had the most, with 134 mm.
Koblenz weather by month
Koblenz weather in January
In January, Koblenz averages a high of 4°C and a low of -1°C. It gets 72 mm of precipitation over about 17 rainy days. Estimated sunshine is 18% of daylight hours, derived from ERA5 cloud cover. The January record high is 14°C (2015) and the record low is -18°C (2009).
Koblenz weather in February
In February, Koblenz averages a high of 6°C and a low of -1°C. It gets 61 mm of precipitation over about 15 rainy days. Estimated sunshine is 26% of daylight hours, derived from ERA5 cloud cover. The February record high is 21°C (2019) and the record low is -19°C (2012).
Koblenz weather in March
In March, Koblenz averages a high of 10°C and a low of 1°C. It gets 66 mm of precipitation over about 14 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The March record high is 26°C (2021) and the record low is -13°C (2010).
Koblenz weather in April
In April, Koblenz averages a high of 16°C and a low of 4°C. It gets 38 mm of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The April record high is 28°C (2007) and the record low is -7°C (2013).
Koblenz weather in May
In May, Koblenz averages a high of 19°C and a low of 7°C. It gets 71 mm of precipitation over about 14 rainy days. Estimated sunshine is 37% of daylight hours, derived from ERA5 cloud cover. The May record high is 32°C (2017) and the record low is -2°C (2021). May is one of the most comfortable months to visit.
Koblenz weather in June
In June, Koblenz averages a high of 22°C and a low of 11°C. It gets 71 mm of precipitation over about 13 rainy days. Estimated sunshine is 42% of daylight hours, derived from ERA5 cloud cover. The June record high is 35°C (2019) and the record low is 3°C (2005). June is one of the most comfortable months to visit.
Koblenz weather in July
In July, Koblenz averages a high of 24°C and a low of 13°C. It gets 69 mm of precipitation over about 15 rainy days. Estimated sunshine is 38% of daylight hours, derived from ERA5 cloud cover. The July record high is 38°C (2019) and the record low is 5°C (2015). July is one of the most comfortable months to visit.
Koblenz weather in August
In August, Koblenz averages a high of 23°C and a low of 12°C. It gets 72 mm of precipitation over about 14 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The August record high is 36°C (2013) and the record low is 4°C (2018). August is one of the most comfortable months to visit.
Koblenz weather in September
In September, Koblenz averages a high of 19°C and a low of 9°C. It gets 55 mm of precipitation over about 11 rainy days. Estimated sunshine is 40% of daylight hours, derived from ERA5 cloud cover. The September record high is 32°C (2020) and the record low is -1°C (2018). September is one of the most comfortable months to visit.
Koblenz weather in October
In October, Koblenz averages a high of 14°C and a low of 6°C. It gets 61 mm of precipitation over about 14 rainy days. Estimated sunshine is 23% of daylight hours, derived from ERA5 cloud cover. The October record high is 27°C (2011) and the record low is -6°C (2012).
Koblenz weather in November
In November, Koblenz averages a high of 8°C and a low of 3°C. It gets 62 mm of precipitation over about 15 rainy days. Estimated sunshine is 20% of daylight hours, derived from ERA5 cloud cover. The November record high is 20°C (2020) and the record low is -8°C (2016).
Koblenz weather in December
In December, Koblenz averages a high of 5°C and a low of 0°C. It gets 88 mm of precipitation over about 19 rainy days. Estimated sunshine is 14% of daylight hours, derived from ERA5 cloud cover. The December record high is 15°C (2019) and the record low is -18°C (2009).
Sunshine, humidity and wind in Koblenz
June is the sunniest month in Koblenz, with estimated sunshine of 42% of daylight hours from ERA5 cloud cover. December is the cloudiest, at 14%. The annual cloud-cover estimate is 31% of daylight hours; it is not a measurement of sunshine duration. Koblenz is cloudier than 60% of Germany.
Humidity peaks in December at 89% and is lowest in April at 65%.
Koblenz has about 4 days a year above 32°C. Koblenz is hotter than 58% of Germany.
First and last freeze in Koblenz
The first fall freeze in Koblenz typically comes around October 21, and the last spring freeze around May 3. That leaves a frost-free growing season of about 171 days.
Koblenz weather records
These records cover MONTABAUR during 2005–2026. Earlier records or other stations in the city may differ.
The hottest temperature on record at the Koblenz station is 38°C, on July 25, 2019. The coldest is -19°C, on February 7, 2012.
The wettest day in the available station history brought 42 mm of precipitation, on August 26, 2014.
The best time to visit Koblenz
The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.
Winter (December–February) is chilly, with average highs around 5°C and lows near -1°C.
Spring (March–May) is mild, with average highs around 15°C and lows near 4°C.
Summer (June–August) is warm, with average highs around 23°C and lows near 12°C.
Autumn (September–November) is mild, with average highs around 14°C and lows near 6°C.
Monthly climate
| Month | Average low | Average high | Precip | Rain days | Humidity | Estimated sunshine | Record high | Record low |
|---|---|---|---|---|---|---|---|---|
| January | -1° | 4° | 72 mm | 17 | 86% | 18% | 14° | -18° |
| February | -1° | 6° | 61 mm | 15 | 80% | 26% | 21° | -19° |
| March | 1° | 10° | 66 mm | 14 | 70% | 38% | 26° | -13° |
| April | 4° | 16° | 38 mm | 11 | 65% | 40% | 28° | -7° |
| May | 7° | 19° | 71 mm | 14 | 67% | 37% | 32° | -2° |
| June | 11° | 22° | 71 mm | 13 | 66% | 42% | 35° | 3° |
| July | 13° | 24° | 69 mm | 15 | 65% | 38% | 38° | 5° |
| August | 12° | 23° | 72 mm | 14 | 67% | 40% | 36° | 4° |
| September | 9° | 19° | 55 mm | 11 | 74% | 40% | 32° | -1° |
| October | 6° | 14° | 61 mm | 14 | 84% | 23% | 27° | -6° |
| November | 3° | 8° | 62 mm | 15 | 87% | 20% | 20° | -8° |
| December | 0° | 5° | 88 mm | 19 | 89% | 14% | 15° | -18° |
Station: MONTABAUR, 19 km from the city. Temperature normal baseline: 1991–2020, calculated from available NOAA GHCN-Daily observations. Available station history: 2005–2026; record values refer to this station and period, not the entire city’s history. Precipitation includes rain and the water equivalent of frozen precipitation; snowfall depth is shown separately when available. Sources and methods
From ERA5 reanalysis. Sunshine is estimated from cloud cover.
Koblenz climate questions
How much rain does Koblenz get?
Koblenz gets 786 mm of precipitation in an average year, over about 170 rainy days.
What is the wettest month in Koblenz?
December is the wettest month in Koblenz, with 88 mm. April is the driest, with 38 mm.
How many rainy days does Koblenz have a year?
Koblenz has about 170 days with measurable rain in an average year. December has the most, about 19.
What is the hottest month in Koblenz?
July is the warmest month in Koblenz, with an average high of 24°C.
What is the coldest month in Koblenz?
January is the coldest month in Koblenz, with an average low of -1°C.
What is the record high temperature in Koblenz?
Within the available 2005–2026 station history, the record high at the Koblenz station is 38°C, set on July 25, 2019. The record low is -19°C, on February 7, 2012.
What is the sunniest month in Koblenz?
June is the sunniest month in Koblenz, with estimated sunshine of 42% of daylight hours from ERA5 cloud cover. December is the cloudiest.
When is the first frost in Koblenz?
The first fall freeze in Koblenz typically comes around October 21. The last spring freeze is around May 3.
What is the best time to visit Koblenz?
The most comfortable time to visit is typically May to September, when daytime highs sit near 22°C.