Puerto Rico
San Juan in July: weather, sea & travel advice
This month's data profile
Rain shapes the decision
San Juan in July is climatically well suited to beach holidays. The average daily high is around 30 °C, and the sea is about 28 °C. With about 25 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
55/100 · #9
Warmth
#3
Dryness
#9
Sun
#2
Sea warmth
#5
Published best categories: none
San Juan · JulyPhoto: Ktorrespr · CC BY-SA 4.0Climate facts
- Average high
- 30 °C
- Average low
- 26 °C
- Sea
- 28 °C
- Rainy days (est.)
- 25 rainy days (est.)
- Sun (est.)
- 7 h/day
- Humidity
- 79 %
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 |
|---|---|---|---|---|---|---|---|---|---|
| June | 30 | 26 | 23 | 98 | 7.4 | 79 | 4.1 | 28 | 56 |
| July (selected) | 30 | 26 | 25 | 112 | 7.4 | 79 | 4.4 | 28 | 55 |
| August | 30 | 26 | 27 | 138 | 7.3 | 79 | 4.1 | 29 | 53 |
How do the previous and next months compare?
Baseline: July (55/100)
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 | |
|---|---|---|---|---|---|---|---|---|---|
| June | +1 | -0.2 °C | -0.3 °C | -1.6 | -14.9 mm | ±0 h | +0.1 % | -0.3 m/s | -0.2 °C |
| August | -2 | +0.3 °C | +0.3 °C | +2.1 | +25.5 mm | -0.1 h | +0.2 % | -0.3 m/s | +0.5 °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 July?
The average daily high is around 30 °C, with an average daily low of about 26 °C.
Can you swim in San Juan in July?
The sea is about 28 °C (very warm).
Does it rain a lot in San Juan in July?
The curated estimate is about 25 rainy days per month, not a directly measured long-term average. Total precipitation averages around 112 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. July is not among them.