San Juan Weather in April
April in San Juan typically sees daytime highs of 30°C (86°F) and nighttime lows of 23°C (73°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in San Juan in April
Historically, approximately 14 days this month are expected to have rain, averaging 91 mm (3.6 in). The rainfall pattern this month is fairly balanced. Showers tend to be moderate rather than extreme.
Temperature in San Juan in April
April in San Juan sees highs of 30°C (86°F) and lows of 23°C (73°F) overnight. This gives the month a fairly typical daily rhythm, with warmer afternoons and more comfortable nights. With overnight lows of 23°C (73°F), evenings stay pleasantly warm.
Sunshine in San Juan in April
Enjoy a sunny month with about 268 hours of sunshine, the clear skies make San Juan even more beautiful.
Wind Speed in San Juan in April
Average wind speeds reach 3 m/s (6 knots) in April, creating light breezes that feel pleasant throughout the day. Some days are calmer, while others bring slightly more active breezes.
Average water temperature in April
The water is 27°C (81°F) this month — warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.If you prefer enjoying temperate temperatures and rain-free days, January, February, March and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our San Juan's climate page.
San Juan Temperature in April
Min Temperature
23°C (73°F)
Max Temperature
30°C (86°F)
Water Temperature
27°C (81°F)
Chance of Rain
46%
Precipitation
91 mm (3.6 in)
Rainy days
14 days
Humidity
71%
Windspeed
3 m/s (6 knots)
Sunshine
268 hours
Percentage Sunshine
71%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Juan typically stay consistent throughout April, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in April
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in April
Historical weather for San Juan in April
Browse day-by-day weather records for San Juan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Juan historical weather extremes in April
Based on 50 years of weather observations (1976-2026), these are the most extreme conditions recorded in San Juan.
- The warmest day in April was on April 17, 1983, with a maximum of 35°C (95°F).
- San Juan experienced its chilliest April day on April 23, 2007, reaching only 25°C (77°F).
- The lowest overnight temperature recorded in April was 19°C (66°F) (April 1, 1976).
Best Places in Puerto Rico in April
Find out more about the weather in Puerto Rico and which places have the best travel conditions in this month. See all of Puerto Rico in April →
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What to Wear in San Juan in April
Warm but pleasant conditions in San Juan in April. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 27°C (81°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in San Juan in April
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Puerto Rico, check out our San Juan's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full San Juan climate overview or explore weather in Puerto Rico.
