Last updated: August 27, 2025
In April, the average temperature in San Juan, Mexico reaches a warm 29°C (84°F), making it an ideal time for outdoor activities. However, temperatures can vary significantly, with minimums dropping to 21°C (71°F) and soaring up to a sizzling 39°C (102°F). Expect about 31 mm (1.2 in) of precipitation over approximately 6 days, accompanied by an average humidity of 74%, adding to the tropical feel of the surroundings.
In April in San Juan, the average temperature is 29°C (84°F), with maximums reaching 39°C (102°F) and minimums dropping as low as 21°C (71°F). It's advisable to pack light, breathable clothing and stay hydrated during your travels to enjoy the warm climate comfortably.
In San Juan in April, the precipitation amount is 31 mm (1.2 in) over a span of 6 days.
In San Juan in April humidity is 74%. With an average temperature of 29°C (84°F), this humidity feels like a thick blanket wrapping around you, making it essential to stay hydrated and take frequent breaks in the shade while exploring.
In San Juan in April, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Juan.
UV Risk Categories
Weather in San Juan varies notably across the year, with each month offering distinct climate conditions. This page compares April’s weather to other months in San Juan, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 24°C (76°F) | 68 mm (2.7 inches) | 81% | very high |
| February Weather | 26°C (78°F) | 24 mm (0.9 inches) | 80% | extreme |
| March Weather | 27°C (81°F) | 20 mm (0.8 inches) | 76% | extreme |
| April Weather | 29°C (84°F) | 31 mm (1.2 inches) | 74% | extreme |
| May Weather | 30°C (87°F) | 45 mm (1.8 inches) | 74% | extreme |
| June Weather | 29°C (84°F) | 252 mm (9.9 inches) | 74% | extreme |
| July Weather | 30°C (85°F) | 54 mm (2.1 inches) | 79% | extreme |
| August Weather | 29°C (85°F) | 108 mm (4.2 inches) | 80% | extreme |
| September Weather | 28°C (84°F) | 184 mm (7.2 inches) | 79% | extreme |
| October Weather | 28°C (82°F) | 235 mm (9.3 inches) | 81% | extreme |
| November Weather | 26°C (79°F) | 138 mm (5.5 inches) | 84% | very high |
| December Weather | 25°C (77°F) | 54 mm (2.1 inches) | 85% | very high |