Puerto Rico
San Juan in April: weather, sea & travel advice
This month's data profile
Rain shapes the decision
San Juan in April is climatically well suited to beach holidays and family holidays. The average daily high is around 29 °C, and the sea is about 27 °C. With about 18 rainy days it is very wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
65/100 · #4
Warmth
#7
Dryness
#4
Sun
#1
Sea warmth
#9
Published best categories: Overall, Beach, Family
San Juan · AprilPhoto: Ktorrespr · CC BY-SA 4.0Climate facts
- Average high
- 29 °C
- Average low
- 24 °C
- Sea
- 27 °C
- Rainy days (est.)
- 18 rainy days (est.)
- Sun (est.)
- 8 h/day
- Humidity
- 75 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Sea °C | Score |
|---|---|---|---|---|---|---|---|---|---|
| March | 28 | 23 | 17 | 74 | 6.9 | 74 | 4.0 | 26 | 69 |
| April (selected) | 29 | 24 | 18 | 92 | 7.5 | 75 | 3.9 | 27 | 65 |
| May | 29 | 25 | 23 | 139 | 7.2 | 78 | 3.8 | 27 | 59 |
How do the previous and next months compare?
Baseline: April (65/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | Sea Δ | |
|---|---|---|---|---|---|---|---|---|---|
| March | +4 | -0.7 °C | -0.8 °C | -1.6 | -18 mm | -0.6 h | -0.8 % | +0.1 m/s | -0.4 °C |
| May | -6 | +0.4 °C | +1 °C | +5 | +46.4 mm | -0.3 h | +3 % | -0.1 m/s | +0.7 °C |
All twelve months in context
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Where to stay in San Juan
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Useful next decisions
Frequently asked questions
How warm is San Juan in April?
The average daily high is around 29 °C, with an average daily low of about 24 °C.
Can you swim in San Juan in April?
The sea is about 27 °C (warm).
Does it rain a lot in San Juan in April?
The curated estimate is about 18 rainy days per month, not a directly measured long-term average. Total precipitation averages around 92 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit San Juan?
By the climate score, January, February, March and April are the strongest months for San Juan. For a beach trip: January, February, March and April. April is one of them.