San Juan in July
In July, San Juan averages 31°C (88°F) during the day and 25°C (77°F) at night, with frequent rain — about 16 days of the month see precipitation (150 mm total).
High seasonConditions are warm and beach-friendly. Expect daily rain or showers, often in heavy bursts.
July is one of the wetter and less comfortable months in San Juan. If your dates are flexible, consider a different time of year.
How July compares to the rest of the year in San Juan
July is one of the warmest months in San Juan (3rd of 12) and one of the wettest months (1st of 12). Daytime temperature runs 1°C above the annual average (30°C). July runs roughly the same as June (31°C) and warms a further 1°C into August (32°C).
July sunrise & sunset in San Juan
Times shown for San Juan local time (America/Puerto_Rico), calculated for the 15th of July. They shift by a few minutes day to day across the month.
Photography light in San Juan — July
Golden-hour and blue-hour windows for the 15th of July, in San Juan's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — San Juan in July
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on July's tier (High season) and San Juan's popularity.
Crowds & pricing — July in San Juan
This is a busy month in San Juan — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: Northern Hemisphere summer holidays
Sun & mosquito risk — July in San Juan
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Sea temperature in San Juan — July
Across the year San Juan's sea swings from 26.5°C (February) to 30.4°C (October) — July sits at 29.4°C.
San Juan in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 21°C / 70°F | 75 mm | 11 | — |
| February | 28°C / 82°F | 21°C / 70°F | 55 mm | 9 | — |
| March | 29°C / 84°F | 22°C / 72°F | 55 mm | 9 | — |
| April | 29°C / 84°F | 23°C / 73°F | 110 mm | 11 | — |
| May | 30°C / 86°F | 24°C / 75°F | 155 mm | 14 | — |
| June | 31°C / 88°F | 25°C / 77°F | 130 mm | 14 | — |
| July | 31°C / 88°F | 25°C / 77°F | 150 mm | 16 | — |
| August | 32°C / 90°F | 25°C / 77°F | 165 mm | 16 | — |
| September | 31°C / 88°F | 25°C / 77°F | 145 mm | 15 | — |
| October | 31°C / 88°F | 24°C / 75°F | 130 mm | 13 | — |
| November | 30°C / 86°F | 23°C / 73°F | 140 mm | 13 | — |
| December | 29°C / 84°F | 22°C / 72°F | 110 mm | 12 | — |
Other cities with similar July weather
🌍 See the full ranked list of climate twins for San Juan in July →
Frequently asked questions
How hot is San Juan in July?
In July, San Juan averages a high of 31°C (88°F) and a low of 25°C (77°F) — generally hot.
Does it rain a lot in San Juan in July?
July is quite rainy in San Juan, with about 16 rainy days on average.
Is July a good time to visit San Juan?
July is hot but on the rainy side. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for San Juan in July?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full July packing list for San Juan for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.