San Juan in June
In June, San Juan averages 31°C (88°F) during the day and 25°C (77°F) at night, with frequent rain — about 14 days of the month see precipitation (130 mm total).
ShoulderConditions are warm and beach-friendly. Plan for unsettled weather and bring rain gear.
June is one of the wetter and less comfortable months in San Juan. If your dates are flexible, consider a different time of year.
How June compares to the rest of the year in San Juan
June is one of the warmest months in San Juan (2nd of 12) and moderately rainy compared to the rest of the year (5th of 12). Daytime temperature runs 1°C above the annual average (30°C). June runs 1°C warmer than May (30°C) and stays flat into July.
June sunrise & sunset in San Juan
Times shown for San Juan local time (America/Puerto_Rico), calculated for the 15th of June. They shift by a few minutes day to day across the month.
Photography light in San Juan — June
Golden-hour and blue-hour windows for the 15th of June, in San Juan's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — San Juan in June
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 June's tier (Shoulder) and San Juan's popularity.
Crowds & pricing — June in San Juan
San Juan is in a shoulder season month — fewer crowds, slightly lower prices, and a calmer atmosphere than peak weeks. Most major sights stay open with normal hours, though a handful of seasonal restaurants or boat trips may run reduced schedules. Many regulars consider these months the best time to visit because you trade a small amount of weather reliability for a much more pleasant on-the-ground experience.
Sun & mosquito risk — June 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.
📊 Right now vs typical — San Juan in June
The past 30 days in San Juan have been running 1.6°C cooler than the typical June average.
Comparison window 2026-05-20 → 2026-06-19 (19 days of observed data). Single-month windows are noisy — strong signals here flag a real anomaly; small ones (<1°C) are within typical year-to-year variation.
Sea temperature in San Juan — June
Across the year San Juan's sea swings from 26.5°C (February) to 30.4°C (October) — June sits at 29.3°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 June weather
🌍 See the full ranked list of climate twins for San Juan in June →
Frequently asked questions
How hot is San Juan in June?
In June, 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 June?
June can be fairly wet in San Juan, with about 14 rainy days on average.
Is June a good time to visit San Juan?
June 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 June?
Pack lightweight, breathable clothing, sunglasses and sunscreen, plus a compact umbrella or rain jacket. See the full June packing list for San Juan for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.