Last updated: August 27, 2025
In May, the average temperature in San Juan, Philippines hovers around 27°C (82°F), with temperatures ranging from a minimum of 25°C (77°F) to a maximum of 30°C (86°F). Be prepared for rainy days, as the area experiences 184 mm (7.2 in) of precipitation over 26 days. With an average humidity of 83%, it's a tropical experience that will certainly keep you warm and somewhat damp!
In May in San Juan, the average temperature is 27°C (82°F). Maximums can reach 30°C (86°F), while minimums can drop to as low as 25°C (77°F). Overall, it's a warm and pleasant destination for travel, perfect for enjoying outdoor activities.
In San Juan, in May, the precipitation amount is 184 mm (7.2 in) spread over 26 days.
In San Juan in May humidity is 83%. With an average temperature of 27°C (82°F), this humidity feels like a thick, warm blanket enveloping you, making outdoor activities exhausting and encouraging visitors to seek the comfort of shade or air conditioning while exploring the area.
In San Juan in May, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan, you can check here.
UV Risk Categories
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 26°C (79°F) | 186 mm (7.3 inches) | 88% | extreme |
| February Weather | 26°C (79°F) | 137 mm (5.4 inches) | 86% | extreme |
| March Weather | 26°C (80°F) | 98 mm (3.9 inches) | 84% | extreme |
| April Weather | 27°C (80°F) | 72 mm (2.8 inches) | 82% | extreme |
| May Weather | 27°C (82°F) | 184 mm (7.2 inches) | 83% | extreme |
| June Weather | 27°C (82°F) | 158 mm (6.2 inches) | 85% | extreme |
| July Weather | 27°C (81°F) | 183 mm (7.2 inches) | 86% | extreme |
| August Weather | 27°C (81°F) | 143 mm (5.6 inches) | 87% | extreme |
| September Weather | 27°C (81°F) | 190 mm (7.5 inches) | 89% | extreme |
| October Weather | 27°C (81°F) | 227 mm (9.0 inches) | 85% | extreme |
| November Weather | 27°C (81°F) | 247 mm (9.7 inches) | 87% | extreme |
| December Weather | 27°C (80°F) | 243 mm (9.5 inches) | 91% | extreme |