Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 5.7 °C | — | 15 days | Unfavourable season |
| February | 8 °C | — | 13 days | Unfavourable season |
| March | 10.6 °C | — | 14 days | Unfavourable season |
| April | 13.8 °C | — | 11 days | Possible, with trade-offs |
| May | 17.7 °C | — | 13 days | Possible, with trade-offs |
| June | 21.6 °C | — | 12 days | Pleasant — a good time to go |
| July | 22.8 °C | — | 11 days | Pleasant — a good time to go |
| August | 23.2 °C | — | 13 days | Pleasant — a good time to go |
| September | 19.7 °C | — | 11 days | Pleasant — a good time to go |
| October | 15.2 °C | — | 13 days | Possible, with trade-offs |
| November | 9.8 °C | — | 13 days | Unfavourable season |
| December | 7.3 °C | — | 14 days | Unfavourable season |
Before you go
Three things to check once you have picked your dates.
Entry
Belgium is in the European Union. Entry rules depend on your nationality — check before booking.
Safety
No specific restrictions
Usual precautions apply.
Official advice updated 12 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 Charleroi in May?
Charleroi is not a seaside destination (no sea data).
How hot is Charleroi in May?
Expect 17.7°C in the afternoon and 8.5°C at night, averaged over the last 10 years.
Does it rain a lot in Charleroi in May?
Around 13 days with rain (≥ 1 mm) in the month — 42% of days.