Mainz weather and climate in 2024
Day
4 °C
Night
-1 °C
Sea
0 °C
Precipitation
44 mm
in month
Rainy days
12 days
in month
Daylight
8 hours
average
Sunshine
1 hours
average
Humidity
89 %
Day
4 °C
Night
-1 °C
Sea
0 °C
Precipitation
44 mm
in month
Rainy days
12 days
in month
Daylight
8 hours
average
Sunshine
1 hours
average
Humidity
89 %
Overview: Mainz
Weather charts for Mainz
We make the most from 40 years of historical weather data to predict the best weather conditions.
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Weather overview for Mainz
Weather overview
Mainz, nestled in the wine region of Germany, enjoys a temperate oceanic climate. Throughout the year, the city sees a fascinating variation of weather patterns, with crisp, chilly winters that introduce a touch of frost, and warm, sun-filled summers conducive to al fresco dining by the Rhine. Precipitation is fairly distributed across the year, with summer thunderstorms bringing the most rainfall. You can expect temperatures to peak around July at approximately 26 °C (78 °F), while the coldest nights occur in January at about -1 °C (31 °F). Providing protection from the elements, Januaries often host 13 days rainy days, while October sees slightly more diverse weather with both rain and crisper air, tallying 11 days rainy days.
January weather
January ushers in the new year with biting cold and the possibility to bundle up in cozy attire. Mainz witnesses its chilliest nights now, averaging -1 °C (31 °F), while daytime temperatures struggle to the 4 °C (40 °F) mark. You might occasionally catch the serene winter sunshine, giving us an average of 1 hour sun hours a day, but don't be fooled; this is also one of the wettest months with an influx of 13 days rainy days.
February weather
With the slight warmth of February, Mainz begins to shed its winter chill, as temperatures gently climb to an average high of 6 °C (43 °F), and the city's nights remain cold but manageable at an average of 0 °C (32 °F). Despite the slight temperature rise, the frequency of rainy days is still considerable with 10 days expected to be wet.
March weather
March in Mainz showcases the first whispers of spring as temperatures rise notably to a daytime average of 11 °C (52 °F). Nighttime chill lingers with an average of 2 °C (36 °F), and the skies begin to clear, gifting Mainz with an average sun hour tally of 4 hours. Rain persists on average 11 days, so spring showers are a common expectation.
April weather
April's arrival in Mainz is marked by an appreciable leap in temperature; the air warms to a pleasant 16 °C (60 °F) average during the day. The climb in temperature is accompanied by a reduction in rainy days, now averaging 10 days, making April one of the drier spring months. Increased sunshine, totaling approximately 5 hours per day, encourages the blossoms to bloom.
May weather
May sees Mainz at its springtime peak with an average high of 20 °C (69 °F), perfect for enjoying a glass of local Riesling outdoors. Evenings remain mild with an average of 9 °C (49 °F). Throughout the month, expect 13 days of rainfall, which is interspersed with 7 hours of sunshine making each day quite balanced in terms of weather.
June weather
As June unfolds, Mainz greets summer with open arms. Thermometers reach an average high of 23 °C (74 °F) during the day, inviting locals and visitors alike to revel in outdoor festivals. With 12 days expected to be rainy and an average humidity level of 69 %, you may experience an occasional thunderstorm, but they tend to be brief and refreshing.
July weather
July in Mainz epitomizes the height of summer with the mercury soaring to its annual zenith, posting an average high of 26 °C (78 °F). The long summer days are graced with maximum sun, presenting an average of 7 hours of sunshine. Rainfall isn't absent, though, with an expectation of around 12 days wet days, indicating that occasional showers are part of the summer pattern.
August weather
August almost mirrors July in terms of warmth and daylight in Mainz, though the average high dips slightly to 25 °C (77 °F). Alongside an average of 11 days rainy days, August carries the tail end of summer's heat, making it ideal for evenings by the Rhine or exploring Mainz's historical spots bathed in 7 hours of daily sunshine.
September weather
With September, Mainz begins to gently wind down from summer, ushering a milder average daytime high of 20 °C (69 °F). As the temperate climate starts to herald autumn, rainy days decrease slightly to about 10 days, while the average humidity inches up to 75 %, giving a hint of freshness in the air.
October weather
October's palette blends the warmth of fall colors with cooler air, as the average daytime temperature in Mainz drops to 15 °C (59 °F). The city sees increased rainfall, marking approximately 11 days wet days among the golden-leaved landscapes, while winds pick up speed to an average of 3 m/s, carrying the whispers of the approaching winter.
November weather
November sees Mainz transitioning deeper into the colder season, with a significant drop in daytime averages to about 9 °C (47 °F). The nightlife too feels the chill, averaging at 3 °C (38 °F). Although sunshine diminishes to 2 hours daily, precipitation retains its pattern with around 11 days of expected rainfall.
December weather
As the year draws to a close, December's temperatures in Mainz dawdle around an average daytime high of 5 °C (41 °F), reflecting the onset of winter. Nights are particularly cold, averaging at 1 °C (33 °F), while rain is ever-present, averaging 13 days akin to the rainy start of the year.
FAQs
Is January in Mainz typically snowy or rainy?
January in Mainz is more about rain than snow, with an average of 13 days rainy days. Although snow is not uncommon, precipitation often comes as rain or sleet due to typical lows of -1 °C (31 °F).
Does February in Mainz offer any relief from the cold?
February offers Mainz a modest respite from the biting cold of January, with daily highs averaging 6 °C (43 °F). The month is still firmly in winter's grip but is a touch gentler than its predecessor.
What changes does March weather bring to Mainz?
March marks a transition in Mainz, with notable warming trends seeing daytime highs averaging 11 °C (52 °F), and more frequent sunny intervals bidding farewell to the dreariness of winter.
Is April a suitable month for outdoor activities in Mainz?
April's milder daytime temperatures averaging 16 °C (60 °F) and reduced rainy days make it an excellent time for outdoor excursions in Mainz, be it a stroll by the Rhine or a visit to the blooming botanical gardens.
Can I expect warm weather in Mainz during May?
Certainly! With an appealing warm average of 20 °C (69 °F) during the day, May in Mainz feels distinctly comfortable and spring-like.
How does June's weather vary in Mainz?
June is when summer truly begins to manifest in Mainz, exhibiting occasional variability with an average high of 23 °C (74 °F) and intermittent, though often brief, rain showers.
What temperatures can I typically expect in Mainz throughout July?
Anticipate balmy days in Mainz during July, as temperatures typically peak at an average of 26 °C (78 °F), perfect for summertime leisure activities.
Is August significantly cooler than July in Mainz?
The transition from July to August in Mainz is subtle, with a minor decrease in the average high to 25 °C (77 °F), which keeps the city comfortably warm.
Does September in Mainz feel like summer or autumn?
September in Mainz is a seasonal crossroads where summer warmth of 20 °C (69 °F) lingers, but the gradually shorter days and cooling breezes hint at the impending autumn.
Can we enjoy outdoor activities in Mainz in October, or is it too chilly?
Outdoor escapades in October are still enjoyable in Mainz, with moderate temperatures averaging 15 °C (59 °F), though it's wise to have a light jacket handy for the cooler moments.
Is November generally cold in Mainz?
Yes, as autumn progresses, November in Mainz grows cold with average highs of 9 °C (47 °F), and you'll find the weather decidedly brisk, suggesting layers are a must for comfort.
What are the typical temperatures in December in Mainz?
December in Mainz carries the chill of winter with it, with temperatures usually hovering around an average high of 5 °C (41 °F) during the day and cooling down steeply at night.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.