Rosario climate
Rosario (Philippines) has a tropical rainforest climate (Köppen Af). The average temperature over the year is 28 °C82 °F, and about 2,446 mm96 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rosario climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2781 | 2475 | 2678 | 1234.8 |
| Feb | 2882 | 2475 | 2679 | 1014.0 |
| Mar | 2984 | 2577 | 2781 | 813.2 |
| Apr | 3187 | 2780 | 2983 | 803.2 |
| May | 3188 | 2882 | 2985 | 1636.4 |
| Jun | 3087 | 2882 | 2984 | 2459.6 |
| Jul | 3085 | 2781 | 2883 | 27111 |
| Aug | 2985 | 2780 | 2883 | 2138.4 |
| Sep | 2985 | 2780 | 2883 | 2439.6 |
| Oct | 2985 | 2780 | 2882 | 30812 |
| Nov | 2984 | 2679 | 2781 | 30212 |
| Dec | 2882 | 2577 | 2780 | 31612 |
| Year | 3188 | 2475 | 2882 | 2,44696 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 84% | 68% | 4.1 | 11:24 |
| Feb | 82% | 56% | 4.9 | 11:41 |
| Mar | 79% | 47% | 5.7 | 12:01 |
| Apr | 76% | 40% | 6.4 | 12:25 |
| May | 76% | 61% | 5.9 | 12:45 |
| Jun | 78% | 77% | 5.4 | 12:55 |
| Jul | 81% | 84% | 5.0 | 12:51 |
| Aug | 82% | 84% | 4.9 | 12:34 |
| Sep | 82% | 82% | 4.9 | 12:11 |
| Oct | 82% | 75% | 4.6 | 11:48 |
| Nov | 85% | 68% | 4.2 | 11:29 |
| Dec | 86% | 72% | 3.7 | 11:19 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Rosario is like
The warmest month is May, with an average high of 31 °C88 °F and a low of 28 °C82 °F. The coldest is January, when highs average 27 °C81 °F and lows 24 °C75 °F. Seasonal differences are small — just 3.7 °C6.7 °F between the warmest and the coolest month.
It is very wet, receiving about 2,446 mm96 in of precipitation per year. The wettest three-month stretch is October–December, which brings 38% of the annual total. The wettest month is December (316 mm12 in), the driest is April (80 mm3.2 in).
Relative humidity ranges from 76% in April to 86% in December. The clearest skies (lowest average cloud amount, 40%) are typical of April. Average wind speed near the ground ranges from 8 km/h (5 mph) in June to 15 km/h (9 mph) in December. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.
Best time to visit Rosario
Based on these averages, the most comfortable months for sightseeing and outdoor activities are February–April: average highs of 28 °C82 °F to 31 °C87 °F with 80 mm3.2 in to 101 mm4.0 in of precipitation per month.
The most challenging month is October, which is very wet (308 mm12 in) and humid (82% relative humidity).
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Rosario
- Wetter months (June–December) — highs 2882 to 30 °C87 °F, lows 2577 to 28 °C82 °F, about 271 mm11 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Drier months (January–May) — highs 2781 to 31 °C88 °F, lows 2475 to 28 °C82 °F, about 110 mm4.3 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an umbrella or light rain jacket.
How Rosario compares
Compared with Batangas, about 22 km to the northwest, Rosario is on average 0.8 °C1.4 °F warmer and receives 11% less precipitation (2,446 mm96 in vs 2,750 mm108 in). The difference is largest in January (1.1 °C2 °F warmer).
Of the 62 places in the Philippines covered by World Climates, Rosario is the 16th warmest by annual mean temperature and the 34th wettest by annual precipitation. See all of them on the Philippines climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Kendari (Indonesia, Af), Kota Kinabalu (Malaysia, Af) and Pasir Puteh (Malaysia, Af).
Nearby places
- Batangas 22 km · 27 °C80 °F · 2,750 mm108 in
- Lucena 54 km · 27 °C81 °F · 2,804 mm110 in
- Tayabas 59 km · 26 °C79 °F · 2,804 mm110 in
- Calamba 65 km · 27 °C80 °F · 2,750 mm108 in
- Silang 70 km · 25 °C77 °F · 2,750 mm108 in
- Imus 94 km · 28 °C82 °F · 2,612 mm103 in
- Metro Manila 111 km · 27 °C81 °F · 2,917 mm115 in
- Quezon City 115 km · 27 °C80 °F · 2,917 mm115 in
Frequently asked questions
What is the warmest month in Rosario?
May is the warmest month in Rosario, with an average high of 31 °C (88 °F) and an average low of 28 °C (82 °F).
What is the coldest month in Rosario?
January is the coldest month, with an average high of 27 °C (81 °F) and an average low of 24 °C (75 °F).
When does it rain the most in Rosario?
December is the wettest month with about 316 mm (12.5 in) of precipitation; April is the driest with about 80 mm (3.2 in).
What is the best time to visit Rosario?
Judging by long-term averages, the most comfortable months are February–April.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.