Month by month
| Month | Afternoon | Sea | Rain | Verdict |
|---|---|---|---|---|
| January | 29.9 °C | 27.2 °C | 7 days | Ideal — one of the best times of year |
| February | 31.1 °C | 26.9 °C | 5 days | Ideal — one of the best times of year |
| March | 33.2 °C | 28 °C | 10 days | Ideal — one of the best times of year |
| April | 34.3 °C | 29 °C | 12 days | Ideal — one of the best times of year |
| May | 33.4 °C | 30.3 °C | 23 days | Unfavourable season |
| June | 30.9 °C | 30.5 °C | 27 days | Unfavourable season |
| July | 29.7 °C | 29.8 °C | 30 days | Unfavourable season |
| August | 29.3 °C | 29.6 °C | 30 days | Unfavourable season |
| September | 29.7 °C | 29.5 °C | 28 days | Unfavourable season |
| October | 30.2 °C | 29.3 °C | 23 days | Unfavourable season |
| November | 30.8 °C | 29 °C | 11 days | Ideal — one of the best times of year |
| December | 30.4 °C | 28.2 °C | 12 days | Ideal — one of the best times of year |
Nearby in April
Before you go
Three things to check once you have picked your dates.
Entry
No visa needed for stays of up to 30 days. Passport valid for at least 6 months. Register on the e-travel system (free) within 72 hours before arrival and keep the QR code; proof of onward travel expected.
For a British passport, per the UK Foreign Office on 15 July 2026. Rules change: check before booking.
Safety
Outside the areas advised against
Parts of the country are advised against (Mindanao (except Siargao, Camiguin and Dinagat islands) and the Sulu archipelago); Olongapo is not one of them.
Official advice updated 15 July 2026
Health
Vaccines · typhoid recommended for most travellers; hepatitis A and hepatitis B if you are not already vaccinated; rabies, Japanese encephalitis, cholera and chikungunya 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: Province of Palawan and the Mindanao Island group No malaria transmission in metropolitan Manila (the capital) or other urban areas. Preventive medication recommended: Atovaquone-proguanil, doxycycline, mefloquine, tafenoquine — prescribed before departure.
Mosquitoes · dengue and Zika reported: protect yourself from bites.
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 Olongapo in April?
The sea averages 29°C in April — yes, pleasant swimming.
How hot is Olongapo in April?
Expect 34.3°C in the afternoon and 25.4°C at night, averaged over the last 10 years.
Does it rain a lot in Olongapo in April?
Around 12 days with rain (≥ 1 mm) in the month — 41% of days.