Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 1.1 °C | 3.2 °C | 4 days | Unfavourable season |
| February | 3.8 °C | 2.3 °C | 4 days | Unfavourable season |
| March | 9.6 °C | 5.1 °C | 4 days | Unfavourable season |
| April | 15.7 °C | 9.9 °C | 6 days | Possible, with trade-offs |
| May | 20.4 °C | 14.7 °C | 8 days | Pleasant — a good time to go |
| June | 24.8 °C | 18.9 °C | 10 days | Ideal — one of the best times of year |
| July | 27.4 °C | 22.5 °C | 18 days | Possible, with trade-offs |
| August | 28.1 °C | 25.8 °C | 16 days | Possible, with trade-offs |
| September | 24.6 °C | 23.8 °C | 9 days | Ideal — one of the best times of year |
| October | 17.8 °C | 18.5 °C | 6 days | Possible, with trade-offs |
| November | 10.1 °C | 13.1 °C | 6 days | Unfavourable season |
| December | 2.6 °C | 7 °C | 4 days | Unfavourable season |
Nearby in June
Before you go
Three things to check once you have picked your dates.
Entry
Visa required before departure. Passport valid until your return date. Borders have been closed to general entry since 2020; tourists can normally only travel as part of an organised tour.
For a British passport, per the UK Foreign Office on 10 December 2025. Rules change: check before booking.
Safety
Travel advised against
Authorities advise against travelling there.
Official advice updated 10 December 2025
Health
Vaccines · hepatitis A and hepatitis B if you are not already vaccinated; rabies and Japanese encephalitis depending on activities and areas visited. Routine vaccines up to date (measles in particular).
Yellow fever · No yellow fever locally, vaccine not recommended. Certificate required only if you arrive from a country with yellow fever risk.
Malaria · Present. Areas: Southern provinces. Preventive medication recommended: Atovaquone-proguanil, chloroquine, doxycycline, mefloquine, primaquine , tafenoquine — prescribed before departure.
Per the CDC (page reviewed 25 August 2026); see a travel clinic a few weeks before departure.
Beau Fixe is not a safety or health authority. These notes summarise dated public texts and link to their source: France Diplomatie (Licence Ouverte 2.0), Foreign, Commonwealth & Development Office (gov.uk, Open Government Licence v3.0), Centers for Disease Control and Prevention (Source: CDC). Only the competent authorities are authoritative.
FAQ
Can you swim in Haeju in June?
The sea averages 18.9°C in June — too cold for most swimmers.
How hot is Haeju in June?
Expect 24.8°C in the afternoon and 16.9°C at night, averaged over the last 10 years.
Does it rain a lot in Haeju in June?
Around 10 days with rain (≥ 1 mm) in the month — 33% of days.