San Juan in March
In March, San Juan averages 29°C (84°F) during the day and 22°C (72°F) at night, with around 9 days of rain (55 mm total).
ShoulderConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
March is a great month to visit San Juan: pleasant temperatures and relatively few wet days.
How March compares to the rest of the year in San Juan
March is in the middle of the year for warmth in San Juan (8th of 12) and one of the driest months (12th of 12). Daytime temperature runs 1°C below the annual average (30°C). March runs 1°C warmer than February (28°C) and stays flat into April.
March sunrise & sunset in San Juan
Times shown for San Juan local time (America/Puerto_Rico), calculated for the 15th of March. They shift by a few minutes day to day across the month.
Photography light in San Juan — March
Golden-hour and blue-hour windows for the 15th of March, in San Juan's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — San Juan in March
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 March's tier (Shoulder) and San Juan's popularity.
Crowds & pricing — March 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.
Why this tier: comfortable tourism weather
Sun & mosquito risk — March 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 — March
Across the year San Juan's sea swings from 26.5°C (February) to 30.4°C (October) — March sits at 26.6°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 March weather
🌍 See the full ranked list of climate twins for San Juan in March →
Frequently asked questions
How hot is San Juan in March?
In March, San Juan averages a high of 29°C (84°F) and a low of 22°C (72°F) — generally warm.
Does it rain a lot in San Juan in March?
March sees occasional rain in San Juan, with about 9 rainy days on average.
Is March a good time to visit San Juan?
March is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for San Juan in March?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full March packing list for San Juan for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.