Rantum, Germany experiences average highs of 11°C (52°F) and lows of 9°C (48°F) throughout the year. Rainfall is frequent, averaging about 13 rainy days per month. Average highs have stayed broadly stable across the available records.
Rantum, Germany Weather & Climate 2026
Monthly climate averages for Rantum, Germany. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Feb–Sep 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
3.8/10
Best: June, July, August, September
UV Index
3
Low
Temperature 11°C / 9°C
Feels Like 8°C / 4°C
Rainy Days 13
Rainfall 80 mm
Sunshine 8 h
Humidity 82%
Wind Speed 35 km/h
Dew Point 7°C
Snow Days 2 days
Frost Days 2 days
Hottest Month
19°C
August
Avg Low 17°C
Rain 13 days
Coldest Month
3°C
February
Avg High 5°C
Rain 12 days
Driest Month
9 days
May
Avg High 13°C
Avg Low 11°C
Windiest Month
41 km/h
January (Gusts 55)
Sea Temperature
4°C – 19°C
Warmest water: August (
19°C
)
Worst Time to Visit
Consider avoiding January, February, November, December due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 05:09
Daylight 16.8h
Sunset 21:56
Live conditions —
Rantum on the map · live conditions
Rantum, Germany
- Continent
- Europe
- Country
- Germany
- City
- Rantum
- Population
- 546
- Coordinates
- 54.85°, 8.29°
Seasonal Breakdown
Spring
Mar–May
Avg High 9°C
Avg Low 7°C
Rain 10 days/mo
Summer
Jun–Aug
Avg High 18°C
Avg Low 16°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 13°C
Avg Low 11°C
Rain 16 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 5°C
Avg Low 4°C
Rain 15 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 5°C / 3°C . Feb: 5°C / 3°C . Mar: 6°C / 4°C . Apr: 9°C / 7°C . May: 13°C / 11°C . Jun: 17°C / 14°C . Jul: 18°C / 16°C . Aug: 19°C / 17°C . Sep: 17°C / 15°C . Oct: 13°C / 12°C . Nov: 9°C / 7°C . Dec: 7°C / 5°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 81 mm. Feb: 73 mm. Mar: 50 mm. Apr: 48 mm. May: 53 mm. Jun: 68 mm. Jul: 89 mm. Aug: 91 mm. Sep: 111 mm. Oct: 118 mm. Nov: 94 mm. Dec: 78 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 84%. Feb: 84%. Mar: 84%. Apr: 79%. May: 80%. Jun: 81%. Jul: 81%. Aug: 79%. Sep: 79%. Oct: 81%. Nov: 83%. Dec: 86%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 41 km/h . Feb: 39 km/h . Mar: 35 km/h . Apr: 33 km/h . May: 32 km/h . Jun: 31 km/h . Jul: 33 km/h . Aug: 32 km/h . Sep: 34 km/h . Oct: 39 km/h . Nov: 38 km/h . Dec: 39 km/h .
Sunshine
Sunshine
Sunshine: Jan: 3h. Feb: 5h. Mar: 8h. Apr: 11h. May: 12h. Jun: 13h. Jul: 12h. Aug: 12h. Sep: 9h. Oct: 6h. Nov: 4h. Dec: 2h.
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 4°C . Feb: 4°C . Mar: 5°C . Apr: 9°C . May: 13°C . Jun: 16°C . Jul: 19°C . Aug: 19°C . Sep: 18°C . Oct: 13°C . Nov: 10°C . Dec: 6°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 1. Feb: UV 2. Mar: UV 3. Apr: UV 4. May: UV 6. Jun: UV 6. Jul: UV 6. Aug: UV 5. Sep: UV 4. Oct: UV 2. Nov: UV 1. Dec: UV 1.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow Days Snowfall
Snow Days: Jan: 3 days. Feb: 3 days. Mar: 2 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 1 days. Dec: 2 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 11 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | — | Aug · 19°C |
| Coldest month | — | Feb · 3°C |
| Wettest month | Sep 2025 · 164 mm | Oct · 118 mm |
| Windiest month | Oct 2025 · 40 km/h | Jan · 41 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June best
Good July best
Fair August best
Good September best
Fair October
Poor November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 5°C / 3°C | 0°C / -4°C | 16days (81 mm) Wet | 3.2h Poor | 84% Humid | 0.8 Low | Poor | View Details |
| February | 5°C / 3°C | -1°C / -4°C | 12days (73 mm) Wet | 5.1h Fair | 84% Humid | 1.5 Low | Poor | View Details |
| March | 6°C / 4°C | 1°C / -2°C | 10days (50 mm) Wet | 7.6h Good | 84% Humid | 3 Moderate | Poor | View Details |
| April | 9°C / 7°C | 5°C / 1°C | 10days (48 mm) Wet | 10.7h Excellent | 79% Humid | 4.2 Moderate | Poor | View Details |
| May | 13°C / 11°C | 10°C / 6°C | 9days (53 mm) Wet | 12.2h Excellent | 80% Humid | 5.7 High | Fair | View Details |
| June best | 17°C / 14°C | 15°C / 11°C | 10days (68 mm) Wet | 12.5h Excellent | 81% Humid | 6.2 High | Good | View Details |
| July best | 18°C / 16°C | 17°C / 13°C | 14days (89 mm) Wet | 12.4h Excellent | 81% Humid | 5.9 High | Fair | View Details |
| August best | 19°C / 17°C | 18°C / 14°C | 13days (91 mm) Wet | 11.6h Excellent | 79% Humid | 5 Moderate | Good | View Details |
| September best | 17°C / 15°C | 15°C / 12°C | 13days (111 mm) Wet | 9h Good | 79% Humid | 3.7 Moderate | Fair | View Details |
| October | 13°C / 12°C | 10°C / 6°C | 17days (118 mm) Wet | 5.9h Fair | 81% Humid | 1.9 Low | Poor | View Details |
| November | 9°C / 7°C | 5°C / 1°C | 17days (94 mm) Wet | 3.6h Poor | 83% Humid | 1 Low | Poor | View Details |
| December | 7°C / 5°C | 1°C / -2°C | 16days (78 mm) Wet | 2.3h Poor | 86% Very Muggy | 0.6 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Rantum are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Rantum, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Rantum is August, with average daytime highs of 19°C (66°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Rantum is February, with average overnight lows of 3°C (37°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Rantum is October, averaging 118mm of precipitation across 17 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Rantum runs through October, November, January, December, with the heaviest rainfall in October. Based on 10-year averages for Rantum.
Rantum receives approximately 96 sunshine hours per year. The sunniest month is June with around 13 hours. Based on climate data for Rantum.
The least favorable months to visit Rantum are January, February, November, December, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Rantum is 3, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Rantum is 82%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Sea temperatures in Summer average 11°C (52°F), which most swimmers will find too cold without a wetsuit.
Yes, Rantum receives snow. Months with snowfall average 2 snow days and 2 cm (1 in) of accumulation, with about 2 frost days during winter.
Average wind speeds in Rantum are 35 km/h (22 mph). The windiest month is January with peak winds reaching 41 km/h (25 mph) (gusts up to 55 km/h / 34 mph).
Rantum averages 2 clear-sky days per month with overall cloud cover around 66%. The clearest skies occur in April.
The annual average dew point in Rantum is 7°C (45°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Rantum has a Oceanic climate, classified as Cfb under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Rantum ranges from 4°C (39°F) to 8°C (46°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
July is not the best time to visit Rantum, with a climate score of 6.4/10. Consider visiting during June, July, August, September instead for better conditions.
For July in Rantum, pack Layered clothing, Light jacket, Umbrella, Waterproof jacket, Waterproof shoes. With average highs of 18°C (64°F) and 14 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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