# Calamba in May: weather

Calamba, Philippines (Southeast Asia). Ten-year climatology (2015-2024), not a forecast. Page: https://beaufixe.net/en/weather/calamba/may

## Key figures

| Indicator | Value |
|---|---|
| Afternoon (mean daily max) | 33.3 °C |
| Night (mean daily min) | 25.6 °C |
| Rainy days (≥ 1 mm) | 23 / month |
| Relative humidity | 79 % |
| Probability of a 25 °C+ afternoon | 100 % |

## Month by month

| Month | Afternoon | Night | Sea | Rain (d) |
|---|---|---|---|---|
| January | 28 °C | 23.2 °C | – | 10 |
| February | 28.8 °C | 22.9 °C | – | 8 |
| March | 31 °C | 23.6 °C | – | 9 |
| April | 32.9 °C | 24.8 °C | – | 11 |
| May | 33.3 °C | 25.6 °C | – | 23 |
| June | 31.7 °C | 25.3 °C | – | 27 |
| July | 30.3 °C | 24.9 °C | – | 29 |
| August | 30.3 °C | 25 °C | – | 28 |
| September | 30.3 °C | 24.8 °C | – | 27 |
| October | 29.8 °C | 24.7 °C | – | 24 |
| November | 29.7 °C | 24.6 °C | – | 16 |
| December | 28.5 °C | 24 °C | – | 17 |

Best months : March, February, January.

## Before you go

- **Safety** : Outside the areas advised against. Parts of the country are advised against (Mindanao (except Siargao, Camiguin and Dinagat islands) and the Sulu archipelago); Calamba is not one of them. (official advice updated 15 July 2026 — https://www.gov.uk/foreign-travel-advice/philippines)
- **Entry** (British passport) : 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. (per the UK Foreign Office, 15 July 2026)
- **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 — https://wwwnc.cdc.gov/travel/destinations/traveler/none/philippines)

## Sources

Air, rain, humidity: ERA5-Land reanalysis (Copernicus) served by Open-Meteo (CC BY 4.0). Sea: NOAA OISST. Safety: FCDO (OGL v3), zones reviewed by Beau Fixe. Entry: France Diplomatie (Licence Ouverte 2.0) / FCDO. Health: CDC (public domain). Details: https://beaufixe.net/en/legal#sources

Beau Fixe — https://beaufixe.net — not a forecast; only the authorities are authoritative for safety, entry rules and health.