AI-generatedMainz at a glance
- Best time
- May – Sep
- Warmest month
- Aug · 25°
- Sunshine a year
- 1,730 h
- Rain a year
- 676 mm
- Climate
- Continental
- Time zone
- UTC+1 / UTC+2
- Elevation
- 125 m
Climate in Mainz
Mainz has warm to hot summers and cold winters with occasional snow. August is the warmest month with average highs of 25 °C, while January is the coolest at 4 °C. With around 1,730 hours of sunshine a year, Mainz is moderately sunny; June is the sunniest month with 7.6 hours a day.
Holiday weather through the year
Weather in October
Holiday weather in October
Fair
Best time to visit: May – September
A typical day in October
- Morning, 08:00: about 8°
- Midday, 13:00: about 14°
- Afternoon, 16:00: about 15°
- Evening, 20:00: about 12°
- Night, 23:00: about 10°
07:4718:38
Cool evenings: pack a jumper or a jacket.
Estimated from the average high and low: coolest around sunrise, warmest in mid-afternoon.
Light for photos in October
- Golden hour
- Morning 07:27–08:31 · evening 17:54–18:58
- Blue hour
- Morning 07:14–07:27 · evening 18:58–19:11
Golden hour: the sun between 4° below and 6° above the horizon; blue hour: 6° to 4° below it. Times for the 15th of the month; mountains and clouds shift the light.
What is the weather like in Mainz in October?
In October, Mainz is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 60 mm in total. All in all, October is a so-so month for a holiday in Mainz.
More details for October
- Daylight
- 10 h 51 min07:47 – 18:38
- UV index
- 2 · lowclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 70 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC+2Europe/Berlin
How the score comes together
- Temperatureweight 50 %68 %
- Sunshineweight 20 %5 %
- Few rainy daysweight 30 %50 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in October
- A jumper for the evenings
- Rain jacket or umbrella
Sunshine hours in Mainz
Average hours of bright sunshine per day, next to the length of the day. Tap a month to select it.
In October, the sun shines for about 3.3 of 10.9 hours of daylight in Mainz, 30 % of the day.
Sunshine hours: measured at the weather station 18 km away, averages 1991–2020 (WMO climate normals). Daylight is the time from sunrise to sunset on the 15th of the month.
UV index in Mainz
How strong the sun is at noon, month by month, and how quickly unprotected skin burns.
- Clear-sky UV in October
- 2 · lowLittle protection needed; sunglasses on bright days.
The sun is strongest in June (UV 8).
Minutes until sunburn in October
- Very fair skin
- about 60 min
- Fair skin
- about 75 min
- Light brown skin
- about 105 min
- Olive skin
- over 2 h
Rough guide for unprotected skin at noon under a clear sky; clouds lengthen it, water, sand and snow shorten it. Sunscreen extends the time only partly.
Monthly values: clear-sky noon estimate from the sun's angle, ozone and altitude. UV today: Open-Meteo forecast.
Rain in Mainz: rainy days and rainfall
A rainy day is a day with at least 1 mm of rain or snow; the amount is what falls in the whole month. Tap a month to select it.
In October, Mainz has about 11 rainy days with 60 mm of rain in total.
Wind and clouds in Mainz
How breezy and how cloudy Mainz is through the year. Tap a month to select it on the whole page.
Wind
Typical daily peak of the wind in km/h: what the afternoon breeze usually reaches, not the gusts.
In October, the wind in Mainz typically peaks at 15 km/h during the day: Beaufort 3, light breeze.
Clouds
Average share of the sky covered by cloud, day and night.
In October, cloud covers on average 70 % of the sky over Mainz: mostly cloudy, with about 3.3 hours of sunshine a day.
Wind: mean daily maximum of the hourly wind 10 m above ground (ERA5, 1996–2025). Gusts are stronger, and the model grid of about 28 km smooths out local effects such as capes and valley winds. Clouds: mean total cloud cover of all layers over day and night (ERA5, 1996–2025). Thin high cloud counts as cover even when the sun still shines through.
Heat and humidity in Mainz
How often the day gets hot in Mainz (30 °C and more), and in which months heat and humidity come together. Tap a month to select it.
Heat calendar
- pleasant
- some hot or muggy days
- often muggy
- often hot
- hot and muggy
In October, Mainz has about 0 hot days, with an average daytime high of 15 °C: pleasant. Heat plays no part this month.
Hot days reach at least 30 °C; a month counts as muggy when the mean dew point reaches 18 °C on at least 15 days. Averages from ERA5 and ERA5-Land, 1996–2025. Muggy nights through the year
Snow in Mainz
Snow is possible in Mainz, but no month makes it likely: the chance of seeing snow during a week's stay, the days with fresh snow and how much falls. Tap a month to select it.
Snow calendar
- hardly any
- possible
- likely
- very likely
In October, it hardly ever snows in Mainz.
Snow days bring at least 1 cm of fresh snow. Fresh snow comes from ERA5 snowfall (1996–2025) at the height of the place, not on the slopes above it; the snow chance also weighs whether the snow settles. An estimate from climate averages, not a snow report.
Climate through the year
Long-term monthly averages. Tap a month to see its details.
Nights and sleep in Mainz
How warm the nights get in each month, from the mean night-time low. Tap a month for details.
- Cold 0–8°
- Cool 8–15°
- Pleasant 15–20°
CoolOctober: nights around 8°. A duvet at night and a jumper for the evening.
The coolest nights are in January (−1°), the warmest in August (15°). Nights are pleasant for sleeping (15 to 20 °C) from July to August. Nights fall below 8 °C on average from November to April, so the room should be heated.
Temperatures through the year
Average daytime high, night-time low and sea temperature per month.
| Month | Score | Day | Night | Sun | Rain days | Rain mm |
|---|---|---|---|---|---|---|
| JanuaryJan | 14 | 4° | −1° | 1.7 h | 12 | 55 |
| FebruaryFeb | 16 | 7° | 0° | 2.8 h | 11 | 50 |
| MarchMar | 33 | 11° | 2° | 4.4 h | 10 | 51 |
| AprilApr | 64 | 15° | 5° | 6.4 h | 9 | 44 |
| MayMay | 78 | 19° | 10° | 7.1 h | 11 | 66 |
| JuneJun | 82 | 23° | 13° | 7.6 h | 10 | 58 |
| JulyJul | 79 | 24° | 15° | 7.6 h | 11 | 61 |
| AugustAug | 83 | 25° | 15° | 7.3 h | 10 | 56 |
| SeptemberSep | 78 | 20° | 12° | 5.5 h | 9 | 54 |
| OctoberOct | 50 | 15° | 8° | 3.3 h | 11 | 60 |
| NovemberNov | 17 | 9° | 4° | 1.7 h | 12 | 60 |
| DecemberDec | 10 | 5° | 1° | 1.3 h | 13 | 62 |
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences
49.98° N, 8.28° E · 125 m · Europe/Berlin
Best time to visit Mainz
The best time to visit Mainz is from May to September. For sightseeing, day trips and hiking, conditions are most comfortable from May to September. Rain is most frequent in December; the wettest month is May with 66 mm.
Mainz through the seasons
How the weather changes over the seasons, with averages for each.
Mainz in spring
Mar – May
Fair
- 11–19 °C by day
- 6 h of sun a day
- 31 rainy days in all
Mainz in summer
Jun – Aug
Excellent
- 23–25 °C by day
- 8 h of sun a day
- 31 rainy days in all
Mainz in autumn
Sep – Nov
Fair
- 9–20 °C by day
- 4 h of sun a day
- 32 rainy days in all
Mainz in winter
Dec – Feb
Poor
- 4–7 °C by day
- 2 h of sun a day
- 35 rainy days in all
Find your perfect month
Tell us what you like and we rate every month in Mainz for you.
Your best months: June – August
Based on the climate averages; tap a month to see its details.
Compare two months in Mainz
Pick two months to see how the weather differs. A tick marks the clearly better value; for temperatures it depends on your plans.
August has the better holiday weather in Mainz: score 83 against 50. In August, days are 10 °C warmer than in October. August has one rainy day fewer. The sun shines 4 hours longer a day in August.
| Month | October | August |
|---|---|---|
| Weather score | 50 | 83better |
| Day high | 15° | 25° |
| Night low | 8° | 15° |
| Sunshine | 3.3 h | 7.3 hbetter |
| Rainy days | 11 | 10better |
| Rainfall | 60 mm | 56 mm |
| Muggy days | 0better | 1 |
Based on the climate averages 1996–2025.
Which month for what?
Beach & swimming
No sea nearby
Sea from 21 °C, warm and mostly dry
Sightseeing & hiking
May – Sep
15–28 °C and not too much rain
Rainy months
Dec
12 or more rainy days
Snow
Dec
Snow on 2 or more days
Mainz month by month
The typical weather for every month at a glance.
14January4° · 2 h
In January, Mainz is cold: daytime highs average 4 °C, and nights often drop below freezing (−1 °C). The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 12 rainy days and 55 mm in total. Snow falls on about 2 days. All in all, January is not an ideal month for a holiday in Mainz.
Mainz in January16February7° · 3 h
In February, Mainz is cold: daytime highs average 7 °C, and nights cool down to about 0 °C. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 50 mm in total. Snow falls on about 2 days. All in all, February is not an ideal month for a holiday in Mainz.
Mainz in February33March11° · 4 h
In March, Mainz is cool: daytime highs average 11 °C, and nights cool down to about 2 °C. Expect around 4 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 51 mm in total. All in all, March is not an ideal month for a holiday in Mainz.
Mainz in March64April15° · 6 h
In April, Mainz is cool: daytime highs average 15 °C, and nights cool down to about 5 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 44 mm in total. All in all, April is a good month for a holiday in Mainz.
Mainz in April78May19° · 7 h
In May, Mainz is mild: daytime highs average 19 °C, and nights cool down to about 10 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 11 rainy days and 66 mm in total. All in all, May is a good month for a holiday in Mainz.
Mainz in May82June23° · 8 h
In June, Mainz is warm: daytime highs average 23 °C, and nights cool down to about 13 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 10 rainy days and 58 mm in total. All in all, June is an excellent month for a holiday in Mainz.
Mainz in June79July24° · 8 h
In July, Mainz is warm: daytime highs average 24 °C, and nights cool down to about 15 °C. The sun shines for around 8 hours a day. Rain is frequent, with about 11 rainy days and 61 mm in total. All in all, July is a good month for a holiday in Mainz.
Mainz in July83August25° · 7 h
In August, Mainz is warm: daytime highs average 25 °C, and nights cool down to about 15 °C. The sun shines for around 7 hours a day. Rain is frequent, with about 10 rainy days and 56 mm in total. All in all, August is an excellent month for a holiday in Mainz.
Mainz in August78September20° · 6 h
In September, Mainz is mild: daytime highs average 20 °C, and nights cool down to about 12 °C. Expect around 6 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 54 mm in total. All in all, September is a good month for a holiday in Mainz.
Mainz in September50October15° · 3 h
In October, Mainz is cool: daytime highs average 15 °C, and nights cool down to about 8 °C. The sun is scarce, with only about 3 hours a day. Rain is frequent, with about 11 rainy days and 60 mm in total. All in all, October is a so-so month for a holiday in Mainz.
Mainz in October17November9° · 2 h
In November, Mainz is cold: daytime highs average 9 °C, and nights cool down to about 4 °C. The sun is scarce, with only about 2 hours a day. Rain is frequent, with about 12 rainy days and 60 mm in total. All in all, November is not an ideal month for a holiday in Mainz.
Mainz in November10December5° · 1 h
In December, Mainz is cold: daytime highs average 5 °C, and nights cool down to about 1 °C. The sun is scarce, with only about 1 hours a day. Rain is frequent, with about 13 rainy days and 62 mm in total. Snow falls on about 2 days. All in all, December is not an ideal month for a holiday in Mainz.
Mainz in DecemberMainz compared
Put Mainz side by side with another destination.
No destination found
Mainz vs. Wiesbaden
In October the holiday weather in Mainz and Wiesbaden is about equally good (score 50 vs. 50). During the day it is about as warm in Wiesbaden as in Mainz.
| in October | Mainz | Wiesbaden |
|---|---|---|
| Holiday score | 50 | 50 |
| Daytime high | 15° | 15° |
| Sunshine | 3 h | 3 h |
| Rainy days | 11 | 11 |
| Best time | May – Sep | May – Sep |
Through the year
Germany in October: the best places
In October, Mainz ranks 8 among the 31 nearest destinations in this country.
- Karlsruhe16°55
- 2Worms15°53
- 3Mannheim15°53
- 4Heidelberg15°53
- 5Baden-Baden15°52
- 6Stuttgart15°52
- 7Tübingen15°51
- 8MainzThis page15°50
Planning a trip to Mainz
Weather for your travel dates
Pick your arrival and length of stay, and we sum up the weather to expect.
Mainz in the school holidays
How the weather suits the usual holiday periods. Dates vary by school and region, so each holiday uses the months it usually falls in.
Mainz has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 12).
- 55
Easter holidays
Mar – Apr
Fair
- 14 °C by day
- 5.8 h of sun a day
- 10 rainy days a month
- 79
May half-term
May – Jun
Good
- 20 °C by day
- 7.2 h of sun a day
- 11 rainy days a month
Good for: Sightseeing & walks
- 82
Summer holidays
Jul – Aug
ExcellentBest holidays
- 25 °C by day
- 7.4 h of sun a day
- 10 rainy days a month
Good for: Sightseeing & walks
- 50
October half-term
Oct
Fair
- 15 °C by day
- 3.3 h of sun a day
- 11 rainy days a month
- 12
Christmas holidays
Dec – Jan
Poor
- 5 °C by day
- 1.5 h of sun a day
- 12 rainy days a month
Keep in mind: Frequent rain, Snow
Based on the climate averages 1996–2025.
Getting there
Flying from
- Nonstop flight
- about 1 h 15 min
- Distance
- 640 km
- Time zone
- UTC+2
- Jet lag
- Hardly any (under 3 h)
Estimated from the straight-line distance: 30 minutes for take-off and landing plus 830 km/h cruising speed.
Frequently asked questions about Mainz
When is the best time to visit Mainz?
The best time to visit Mainz is from May to September. That is when the holiday weather score, which combines temperature, sea, sunshine and rain, is highest.
What is the warmest month in Mainz?
August is the warmest month, with average highs of 25 °C and nights around 15 °C. January is the coolest month at 4 °C.
When does it rain most in Mainz?
Rain is most frequent in December; the wettest month is May with 66 mm. The driest month is April with 44 mm.
How many hours of sunshine does Mainz get?
Mainz gets around 1,730 hours of sunshine a year. The sunniest month is June with 7.6 hours a day; in December there are 1.3 hours a day.
What time zone is Mainz in?
Mainz uses the time zone Europe/Berlin: UTC+1 in January and UTC+2 in July.
How long is the flight from London to Mainz?
A nonstop flight from London to Mainz takes about 1 h 15 min, for a straight-line distance of about 640 km.
Which school holidays are best for Mainz?
Mainz has its best school-holiday weather during the summer holidays (score 82) and its weakest during the Christmas holidays (score 12). Holiday ratings (0–100): Easter holidays 55, May half-term 79, Summer holidays 82, October half-term 50, Christmas holidays 12.
Near Mainz
Other destinations close by.
Places with a climate like Mainz
Destinations whose weather through the year is closest to Mainz's – good alternatives.