When to go · Heligoland
Heligoland in September
Great month. Inside Heligoland's best window: May–Sep.
Key facts
- Verdict
- Great
- Temperature
- 17°C (63°F)63°F (17°C) / 12°C (54°F)54°F (12°C)
- average high / low
- Rain days
- 15
- Crowds
- Medium
- Germany overall
- Prices
- High
- Germany overall
Verdict
Inside Heligoland's best window: May–Sep.
Is another month better than September?
No other month rates higher than September for Heligoland in this guide.
Weather in September
- HeligolandHighs around 17 °C (63 °F), lows around 12 °C (54 °F), rain on about 15 daysHighs around 63 °F (17 °C), lows around 54 °F (12 °C), rain on about 15 days
Festivals and holidays
Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.
Oktoberfest (Munich) big impact
Mid Sep – early Oct (19 Sep – 4 Oct 2026) · Germany
Munich hotels triple in price; trains from Munich crowded in the evenings.
Crowds and prices
- Crowds · Germany overall
- Medium
- Prices · Germany overall
- High
Germany overall: Best all-round month; Oktoberfest starts in the second half and Munich prices triple.
High-price month: see what to book ahead.
Compare two months
Weather, crowds and prices for any two months in Heligoland, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 17 °C (63 °F)63 °F (17 °C)
May: 14 °C (57 °F)57 °F (14 °C)
Night low
Sep: 12 °C (54 °F)54 °F (12 °C)
May: 8 °C (46 °F)46 °F (8 °C)
Rain days
Sep: 15
May: 12 (better)
Crowds
Sep: Medium
May: Medium
Prices
Sep: High
May: Medium
Festivals listed
Sep: 1
May: 0
September: Inside Heligoland's best window: May–Sep.
May: Inside Heligoland's best window: May–Sep.
Heligoland: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast