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Contents
- The climate of Mainz
- The best time to visit Mainz
- The worst time to visit Mainz
- Spring weather in Mainz
- Summer weather in Mainz
- Autumn weather in Mainz
- Winter weather in Mainz
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
The climate of Mainz
In the realm of meteorological categorization, the climate of Mainz, Germany is typically identified as a Marine West Coast climate, often referred to by the Köppen classification as Cfb. This climate type implies mild temperatures with no extremes, rainfall distributed uniformly throughout the year, and warm summers. The city of Mainz is advantageously positioned in a region that enjoys the protective effects of both mountainous terrain and coastal winds, keeping it relatively moderate throughout the year.
Variations in temperature, from chilly winters to milder summers, are a key characteristic of Mainz's climate. The hottest month is typically July, with an average high of 25.2°C (77.4°F), while temperatures can hit a low, on average, of -0.5°C (31.1°F) in January. Simultaneously, the city sees shifts in humidity, having extremes of 86% during cold January months and 67% in the heat of July. The climatological matrix of Mainz also includes variations in rainfall, the heaviest of which is usually observed in July with a monthly average of 45mm (1.77"), giving way to a light 19mm (0.75") in April.
Unique weather patterns emerge within these cycling conditions. The city experiences more snowfall during the winter months, specifically December and January, with an average of 38mm (1.5") and 28mm (1.1") respectively. November offers a distinctive switch, rendering it a drier, cooler month with a noteworthy lack of snowfall.
Variations in temperature, from chilly winters to milder summers, are a key characteristic of Mainz's climate. The hottest month is typically July, with an average high of 25.2°C (77.4°F), while temperatures can hit a low, on average, of -0.5°C (31.1°F) in January. Simultaneously, the city sees shifts in humidity, having extremes of 86% during cold January months and 67% in the heat of July. The climatological matrix of Mainz also includes variations in rainfall, the heaviest of which is usually observed in July with a monthly average of 45mm (1.77"), giving way to a light 19mm (0.75") in April.
Unique weather patterns emerge within these cycling conditions. The city experiences more snowfall during the winter months, specifically December and January, with an average of 38mm (1.5") and 28mm (1.1") respectively. November offers a distinctive switch, rendering it a drier, cooler month with a noteworthy lack of snowfall.
The best time to visit Mainz
Accounting for a combination of weather conditions, the most favorable time to venture to Mainz might be late spring and early summer. Specifically, May offers a blend of moderate temperatures, ranging from 18.8°C (65.8°F) to 8.5°C (47.3°F), coupled with an average of only 13.4 rainy days. These conditions cultivate an ideal environment for sightseeing, offering more daylight hours, with 15.4 hours to be exact, allowing visitors to explore Mainz extensively.
The worst time to visit Mainz
On the flip side of tranquility, the months of July and August might pose as challenging periods for tourists due to the increased rainfall and high humidity of 67%. Despite warm temperatures, these months bring 45mm (1.77") and 39mm (1.54") of rain on average. Also, the likelihood of encountering a greater number of rainy days, with an average of 14.7 days in July, could upset traveling plans.
Spring weather in Mainz
Spring (March through May) in Mainz gradually lifts the cold veil of winter, with temperatures progressively warming from an average high of 10.3°C (50.5°F) in March to 18.8°C (65.8°F) in May. Rainfall during these months sees a slight increase from 26mm (1.02") in March to 34mm (1.34") in May, while the relative humidity remains within a comfortable band from 76% to 71%.
Summer weather in Mainz
Mainz’s summer months, spanning from June to August, are marked by the warmest temperatures of the year. The mercury runs from 22.6°C (72.7°F) in June up to a peak of 25.2°C (77.4°F) in July before slightly dipping to 24.9°C (76.8°F) in August. Concurrently, rainfall sees a notable surge, reaching its yearly peak in July at 45mm (1.77").
Autumn weather in Mainz
The cool retreat of autumn (September through November) prompts a decrease in temperatures, with averages falling from 20.2°C (68.4°F) in September down to 8.5°C (47.3°F) by November. During this season, the amount of rainfall escalates, starting from 22mm (0.87") in September to a high of 34mm (1.34") in November.
Winter weather in Mainz
From December through February, winter envelops Mainz. January registers as the coldest month, carrying an average high of just 3.7°C (38.7°F). Simultaneously, snowfall becomes a characteristic feature with peaks noted in December and January, averaging 38mm (1.5") and 28mm (1.1") respectively. Crystalline drops of rain add to the winter rhythm, registering an average of 38mm (1.5") in December.
Weather in January
Beginning the year with the influence of the winter season, the weather in January experiences cool temperatures. As the coldest month temperatures range from a low of -0.5°C (31.1°F) to a high of 3.7°C (38.7°F). The presence of 28mm (1.1") of snowfall in January further reinforces the chill of the winter season. Weather in January »
Weather in February
As winter persists into February, Mainz begins to see a gradual increase in temperature. With maximum temperatures reaching 5.2°C (41.4°F), a distinct yet moderate shift from the previous month is noticeable. February also brings about an increase in snowfall, rising to 39mm (1.54"), asserting the continuation of the winter season. Weather in February »
Weather in March
Marking the onset of spring, March sees a significant turn in the weather patterns of Mainz, Germany. Temperatures rise considerably, hitting a high of 10.3°C (50.5°F), reflecting the receding winter. Rainfall maintains consistency with February's levels at 26mm (1.02"), replenishing the flora as the snow melts away. Weather in March »
Weather in April
As we move into mid-spring, April weather fundamentally shifts with warmer temps, registering a high of 16.2°C (61.2°F). More daylight hours and increased sunshine come as relieving changes after the exhaustion of winter. April sees a fall in rainfall, down to 19mm (0.75"), indicating a drier, warmer climate. Weather in April »
Weather in May
May continues the ascending temperature trend in Mainz, Germany, showcasing an ideal spring climate. An increase of 2.6°C (36.7°F) in the maximum temperature from April, reaching 18.8°C (65.8°F), makes May the gateway to summer. Weather in May »
Weather in June
June signifies the commencement of summer in Mainz, with temperatures soaring past the 20°C (68°F) mark for the first time in the year, reaching 22.6°C (72.7°F). Situated at the threshold of the warmest months, the climate remains manageable and welcoming. Weather in June »
Weather in July
In the full swing of summer, the heat spikes in July in Mainz as the highest temperatures of the year are recorded at 25.2°C (77.4°F). The month brims with sunshine, as July registers ample daylight hours, offering abundant opportunities for residents and tourists to enjoy the warm weather. Weather in July »
Weather in August
While remaining well within the summer season, August sees a slight drop in temperature in Mainz, Germany. Registering a decline from July's high, the maximum temperature falls to 24.9°C (76.8°F), suggesting a slow transition towards autumn. Weather in August »
Weather in September
September brings the onset of autumn, with a notable drop in temperatures, reaching a high of 20.2°C (68.4°F). The shift from the scorching summer climate to the moderate autumn weather is much awaited. Rainfall amounts decrease to 22mm (0.87"), alongside a reduction in daylight and sunshine hours, providing a respite from the heat. Weather in September »
Weather in October
October immerses Mainz, Germany, fully into the autumn season. A further decline in temperatures, falling to a high of 14.2°C (57.6°F), sets the stage for the encroaching winter. Despite the lowering temperatures, the rainfall increases to 34mm (1.34"), rejuvenating the city after summer's warmth. Weather in October »
Weather in November
With November's arrival, Mainz begins to feel the grip of the winter season as temperatures plunge further to a high of 8.5°C (47.3°F). Defining November, the increased humidity and cloudy days indicate an entirely different climate regime. Weather in November »
Weather in December
Rounding up the year, December embraces the winter season with the lowest temperatures, second only to January, falling to a high of 5°C (41°F). Delivering a white Christmas to Mainz, December sees the return of snowfall, with the ground blanketed by 38mm (1.5") of snow. Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Mainz?
Mainz's coldest temperatures are experienced in January, with average high temperatures of 3.7°C (38.7°F) and lows of -0.5°C (31.1°F).
How many days does it rain in Mainz?
In Mainz, Germany, during the entire year, the rain falls for 146.5 days and collects up to 366mm (14.41") of precipitation.
When does it snow in Mainz?
Months with snowfall in Mainz are January through April, November and December.
How many days does it snow in Mainz?
In Mainz, Germany, during the entire year, snow falls for 17.5 days and aggregates up to 119mm (4.69") of snow.
What is the month with the lowest UV index in Mainz?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
What is the snowiest month in Mainz?
The month with the most snowfall is February, when snow falls for 5.4 days and typically aggregates up to 39mm (1.54") of snow.
What is the driest month in Mainz?
The month with the least rainfall is April, when the rain falls for 10.6 days and typically collects 19mm (0.75") of precipitation.
When it does not snow in Mainz?
May through October are months without snowfall.
When is the highest UV index in Mainz?
May through August, with an average maximum UV index of 5, are months with the highest UV index in Mainz, Germany.
When are the longest days in Mainz?
The month with the longest days is June, with an average of 16h and 18min of daylight.
What is the warmest month in Mainz?
Mainz experiences its highest temperatures in July, with an average peak of 25.2°C (77.4°F) and a low of 14.3°C (57.7°F).
What is the least humid month in Mainz?
July and August, with an average relative humidity of 67%, are the least humid months.
What is the wettest month in Mainz?
July is the month with the most rainfall in Mainz. Rain falls for 14.7 days and accumulates 45mm (1.77") of precipitation.
What month has the most sunshine in Mainz?
With an average of 10.4h of sunshine, July has the most sunshine of the year.
When is Daylight Saving Time (DST) in Mainz?
On Sunday, 27. October 2024, at 03:00, Daylight Saving Time ends, and the time zone changes from CEST to CET. The next Daylight Saving Time starts on Sunday, 30. March 2025, at 02:00, and the time zone reverts from CET to CEST.
What is the most humid month in Mainz?
December is the most humid month in Mainz, with an average relative humidity of 87%.
What is the month with the shortest days in Mainz?
December has the shortest days of the year in Mainz, Germany, with an average of 8h and 12min of daylight.
What is the month with the least sunshine in Mainz?
December has the least sunshine of the year, with an average of 3.6h of sunshine.
Average temperature
Mainz, Germany
The warmest month (with the highest average high temperature) is July (25.2°C).
The month with the lowest average high temperature is January (3.7°C).
The month with the highest average low temperature is August (14.7°C).
The coldest month (with the lowest average low temperature) is January (-0.5°C).
Average pressure
Mainz, Germany
- Average pressure in January:
1017.7mbar - Average pressure in February:
1016.6mbar - Average pressure in March:
1016.6mbar - Average pressure in April:
1015.7mbar - Average pressure in May:
1016mbar - Average pressure in June:
1016mbar
- Average pressure in July:
1015.7mbar - Average pressure in August:
1016.2mbar - Average pressure in September:
1018.1mbar - Average pressure in October:
1017.9mbar - Average pressure in November:
1014.5mbar - Average pressure in December:
1018.3mbar
The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1014.5mbar).
Average wind speed
Mainz, Germany
- Average wind speed in January:
11.2km/h - Average wind speed in February:
11.9km/h - Average wind speed in March:
11.9km/h - Average wind speed in April:
10.3km/h - Average wind speed in May:
9.9km/h - Average wind speed in June:
9.6km/h
- Average wind speed in July:
9.3km/h - Average wind speed in August:
8.7km/h - Average wind speed in September:
8.9km/h - Average wind speed in October:
9.6km/h - Average wind speed in November:
10.2km/h - Average wind speed in December:
11.4km/h
The windiest months (with the highest average wind speed) are February and March (11.9km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity
Mainz, Germany
The month with the highest relative humidity is December (87%).
The months with the lowest relative humidity are July and August (67%).
Average rainfall
Mainz, Germany
The wettest month (with the highest rainfall) is July (45mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days
Mainz, Germany
- Average rainfall days in January:
11.8 days - Average rainfall days in February:
9.6 days - Average rainfall days in March:
11.8 days - Average rainfall days in April:
10.6 days - Average rainfall days in May:
13.4 days - Average rainfall days in June:
12.2 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
13 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
13.2 days - Average rainfall days in November:
12.3 days - Average rainfall days in December:
14.3 days
The month with the highest number of rainy days is July (14.7 days).
The months with the least rainy days are February and September (9.6 days).
Average snowfall
Mainz, Germany
The month with the highest snowfall is February (39mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days
Mainz, Germany
- Average snowfall days in January:
5.3 days - Average snowfall days in February:
5.4 days - Average snowfall days in March:
1 days - Average snowfall days in April:
0.2 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.9 days - Average snowfall days in December:
4.6 days
The month with the highest number of snowfall days is February (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Mainz, Germany
- Average daylight in January:
8h and 4min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 5min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 2min
- Average daylight in July:
15h and 5min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 4min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 1min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
9h and 1min - Average sunshine in May:
9h and 2min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 3min - Average sunshine in November:
4h and 1min - Average sunshine in December:
3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days
Mainz, Germany
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
13.6 days - Average sunshine days in March:
17.2 days - Average sunshine days in April:
17.4 days - Average sunshine days in May:
15.8 days - Average sunshine days in June:
16 days
- Average sunshine days in July:
14.2 days - Average sunshine days in August:
16.1 days - Average sunshine days in September:
17.9 days - Average sunshine days in October:
15.6 days - Average sunshine days in November:
14.5 days - Average sunshine days in December:
12 days
The month with the most sunshine days is September (17.9 days).
The month with the least sunshine days is December (12 days).
Average UV index
Mainz, Germany
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Mainz, Germany
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility
Mainz, Germany
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).
Mainz, Germany
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