SyltPhoto: Sebastian Martin Dicke · CC BY-SA 4.0Germany · Europe
Best time to visit Sylt
Sylt is a summer destination for beach walks, wind and open horizons. The climate is cool and changeable; even in high summer the North Sea only reaches around 18°C. The best time to visit is summer, when it is mildest and sunniest.
Climate decision
Best travel months for Sylt
Top recommendation
Next highest scores
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Latest 5-year values 2021–2025
Average of the five most recent complete years compared with the 1991–2025 climate average.
January · Wet days
20 days/month
1991–2025: 16.2 days/month
+3.8 days/month · higher
May · Monthly precipitation
80.7 mm/month
1991–2025: 52.8 mm/month
+28 mm/month · higher
September · Mean daily maximum
17.8 °C
1991–2025: 16.6 °C
+1.2 °C · higher
August · Sea temperature
18.7 °C
1991–2025: 18.5 °C
+0.2 °C · similar
August: 0/155 days at or above 30 °C; highest single value 24.4 °C.
Five-year historical sample, not a weather forecast or long-term climate trend. Individual hot days can be far above the monthly mean.
Annual profile · Coast and sea
Sylt: the swimming season follows two curves
Average daily highs vary by 14.8 °C through the year, while the sea varies by 15.4 °C. Air and water temperature should therefore be considered separately.
The practical difference
The month with the highest daytime temperature and the month with the warmest sea need not define the same travel window. Rain and sunshine help resolve the trade-off.
Warmest sea
August · 18.5 °C
Highest average daily high
August · 18.7 °C
Fewest rainy days
April · 10
Most sunshine
June · 7 h
Month by month
Overall suitability per month. Tap a month for details.
All climate figures compared
The table is the complete accessible data view; the charts below highlight selected patterns.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Rain mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| January | 5 | 3 | 16 | 83 | 0.6 | 88 | 7.1 | 4 | 15 |
| February | 4 | 2 | 13 | 67 | 1.4 | 88 | 6.7 | 3 | 21 |
| March | 5 | 3 | 12 | 60 | 3.0 | 88 | 6.1 | 4 | 25 |
| April | 8 | 6 | 10 | 46 | 5.1 | 86 | 5.3 | 7 | 34 |
| May | 12 | 10 | 11 | 53 | 6.6 | 85 | 5.2 | 11 | 40 |
| June | 15 | 13 | 11 | 65 | 7.0 | 84 | 5.2 | 15 | 47 |
| July | 18 | 16 | 14 | 74 | 6.5 | 83 | 5.2 | 17 | 52 |
| August | 19 | 17 | 16 | 85 | 5.3 | 82 | 5.3 | 19 | 53 |
| September | 17 | 15 | 15 | 84 | 3.6 | 82 | 6.0 | 16 | 42 |
| October | 13 | 11 | 17 | 99 | 1.9 | 84 | 6.7 | 13 | 24 |
| November | 9 | 7 | 17 | 89 | 0.8 | 86 | 6.9 | 9 | 17 |
| December | 6 | 4 | 17 | 91 | 0.5 | 87 | 6.9 | 6 | 14 |
Climate through the year
Compare temperature, rainy days, sunshine and, for coastal destinations, sea temperature month by month.
Find a place to stay
Where to stay in Sylt
Compare available stays, prices and cancellation terms for Sylt on Booking.com.
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Useful next decisions
Similar destinations
The number is the overall climate score, not a similarity score.
Frequently asked questions
When is the best time to visit Sylt?
The best time depends on the trip type; the cards above show each monthly decision.
Which month has the highest average daily maximum temperature in Sylt?
The average daily maximum temperature in Sylt is highest in August at around 19 °C.
When is the sea warmest at Sylt?
In August, at around 19 °C.