Olongapo weather by month & the best time to visit
Philippines · beach resort · tropical monsoon climate

The best time to visit Olongapo is January — its sunniest month (Sunshine Score 90/100), with February and March close behind. Olongapo averages about 2,412 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 16 mm of rain in January.
When is the best time to visit Olongapo?
For sunshine, the best time to visit Olongapo is January, then February and March. The dullest month is May (66/100, 210 mm of rain). The full month-by-month picture is in the table below.
How sunny is Olongapo?
Olongapo gets a moderate 2,412 hours of sunshine a year. January (90/100) is noticeably better than May (66). It ranks #15 of 43 destinations in Philippines for annual sunshine, above the national median of 2,288 hours. Rain is strongly seasonal here: roughly 60% of the year's 2,852 mm falls in the three months around August.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 90 | 30° / 86°F | 23° / 73°F | 16 mm | 8 | 28° / 82°F |
| February | 90 | 31° / 88°F | 24° / 75°F | 17 mm | 10 | 28° / 82°F |
| March | 89 | 32° / 90°F | 25° / 77°F | 22 mm | 11 | 28° / 82°F |
| April | 77 | 33° / 91°F | 26° / 79°F | 41 mm | 12 | 30° / 86°F |
| May | 66 | 32° / 90°F | 27° / 81°F | 210 mm | 10 | 31° / 88°F |
| June | 66 | 30° / 86°F | 27° / 81°F | 455 mm | 9 | 31° / 88°F |
| July | 66 | 29° / 84°F | 27° / 81°F | 575 mm | 9 | 31° / 88°F |
| August | 66 | 29° / 84°F | 27° / 81°F | 674 mm | 9 | 30° / 86°F |
| September | 66 | 29° / 84°F | 27° / 81°F | 465 mm | 9 | 30° / 86°F |
| October | 66 | 30° / 86°F | 26° / 79°F | 219 mm | 9 | 30° / 86°F |
| November | 75 | 30° / 86°F | 25° / 77°F | 99 mm | 8 | 30° / 86°F |
| December | 82 | 29° / 84°F | 24° / 75°F | 59 mm | 8 | 29° / 84°F |
Sea temperature in Olongapo by month
The sea off Olongapo is warmest in May at around 31°C / 88°F, and coolest in January at 28°C / 82°F. The water sits at a comfortable 21°C or warmer roughly all year round. Month-by-month sea-surface temperatures are in the Sea column of the table above.
Nearest destinations
Olongapo: questions and answers
What kind of destination is Olongapo?
Olongapo is a beach resort in Philippines with a tropical monsoon climate — the sea reaches 31°C at its warmest and is swimmable (21°C+) year-round.
How many hours of sunshine does Olongapo get a year?
Olongapo gets about 2,412 hours of sunshine a year, at its best around January.
When is the best time to visit Olongapo?
The sunniest time to visit Olongapo is January, when the Sunshine Score peaks at 90/100 (with February and March close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Olongapo?
May is the least sunny month in Olongapo, scoring 66/100 with about 210 mm of rain.
What is the sea temperature in Olongapo?
The sea in Olongapo ranges from about 28°C (January) to 31°C (May). Month-by-month sea temperatures are on this page.
How strong is the sun in Olongapo?
The typical midday UV index in Olongapo peaks around 12 (extreme) in April, easing to about 8 (very high) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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