Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 6.8 °C | 7.1 °C | 15 days | Unfavourable season |
| February | 7.5 °C | 6.2 °C | 13 days | Unfavourable season |
| March | 9.2 °C | 6.8 °C | 13 days | Unfavourable season |
| April | 11.9 °C | 8.9 °C | 11 days | Unfavourable season |
| May | 15.8 °C | 11.9 °C | 11 days | Possible, with trade-offs |
| June | 19.1 °C | 15.5 °C | 11 days | Pleasant — a good time to go |
| July | 20.3 °C | 18 °C | 13 days | Pleasant — a good time to go |
| August | 21 °C | 19.4 °C | 14 days | Pleasant — a good time to go |
| September | 18.8 °C | 18.1 °C | 12 days | Possible, with trade-offs |
| October | 14.8 °C | 15.3 °C | 15 days | Possible, with trade-offs |
| November | 10.5 °C | 11.9 °C | 17 days | Unfavourable season |
| December | 8.2 °C | 8.8 °C | 16 days | Unfavourable season |
Before you go
Three things to check once you have picked your dates.
Entry
Netherlands is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 11 August 2026
Health
Recommended vaccinations, water quality, mosquitoes: advice depends on the country and the season. Some vaccines need time before departure.
Beau Fixe is not a safety or health authority. These notes summarise public advisories and link to their source; only the competent authorities are authoritative. Alert levels: Foreign, Commonwealth & Development Office (gov.uk), Open Government Licence v3.0.
FAQ
Can you swim in Alkmaar in June?
The sea averages 15.5°C in June — too cold for most swimmers.
How hot is Alkmaar in June?
Expect 19.1°C in the afternoon and 13.3°C at night, averaged over the last 10 years.
Does it rain a lot in Alkmaar in June?
Around 11 days with rain (≥ 1 mm) in the month — 36% of days.