San Juan Weather in July
During July, San Juan experiences very high daytime temperatures of 31°C (88°F) and cooler nights around 25°C (77°F). Expect quite a bit of rainfall. Around 102 mm (4 in) is typical.
Rainfall in San Juan in July
Typically around 19 days of rainfall are expected, averaging 102 mm (4 in) for the month. Expect frequent rainfall this month, and not just light drizzle. When it rains, it tends to come down hard.
Temperature in San Juan in July
July in San Juan brings typical temperatures with highs around 31°C (88°F) and lows of 25°C (77°F). For most visitors, the main thing to prepare for is the heat during the day. With lows around 25°C (77°F), the nights are warm enough that a sheet is usually all you need for bedding.
Sunshine in San Juan in July
There are approximately 281 hours of sunshine this month, resulting in mostly clear days.
Wind Speed in San Juan in July
July sees wind speeds averaging 4 m/s (8 knots). You'll experience variable conditions with moderate winds that create small waves on water and keep branches moving. Conditions range from light winds to moderate breezes throughout the month.
Average water temperature in July
With water at 28°C (82°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.July in San Juan has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
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 July
Min Temperature
25°C (77°F)
Max Temperature
31°C (88°F)
Water Temperature
28°C (82°F)
Chance of Rain
63%
Precipitation
102 mm (4 in)
Rainy days
19 days
Humidity
76%
Windspeed
4 m/s (8 knots)
Sunshine
281 hours
Percentage Sunshine
68%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Juan typically stay consistent throughout July, with daily highs averaging around 31°C (88°F). Nights are warm, with lows around 26°C (79°F).
Average temperatures in July
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 July
Historical weather for San Juan in July
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 July
Based on weather observations in San Juan between 1976 and 2025, these are the recorded extremes during July.
- The warmest day in July was on July 5, 2024, with a maximum of 34°C (93°F).
- The lowest daytime temperature in July was 27°C (81°F), recorded on July 11, 1993.
- San Juan registered its coldest July night on July 13, 2003, with temperatures dropping to 22°C (72°F).
Best Places in Puerto Rico in July
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 July →
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What to Wear in San Juan in July
Warm weather calls for comfortable, breathable clothing in July. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). High rain levels are expected, so pack waterproof gear and an umbrella or poncho. The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San Juan in July
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.
