San Juan, Puerto Rico weather in March
Temperature, sea and sunshine in March: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in March
Good
Best time to visit: December – April
What is the weather like in San Juan, Puerto Rico in March?
In March, San Juan, Puerto Rico is hot: daytime highs average 29 °C, and even at night it stays warm at around 22 °C. The sea averages 26.3 °C – lovely and warm for swimming. The sun shines for around 8 hours a day. Rain falls on about 9 days, adding up to 42 mm. On about 11 days the thermometer climbs to 30 °C or more. The air is often humid and muggy. All in all, March is a good month for a holiday in San Juan, Puerto Rico.
March compared
How the weather changes from February to April. Tap a month to open it.
| FebruaryFeb | MarchMar | AprilApr | |
|---|---|---|---|
| Score | 75 | 71 | 63 |
| Day | 29° | 29° | 30° |
| Night | 22° | 22° | 22° |
| Sea | 26° | 26° | 27° |
| Sun | 8 h | 8 h | 8 h |
| Rain days | 9 | 9 | 11 |
More details for March
- Daylight
- 12 h 1 min06:34 – 18:34
- UV index
- 11 · extremeclear sky, noon (estimate)All months
- Muggy days
- 27 daysdew point 18 °C or more
- Wind
- 20 km/haverage daily peak
- Cloud cover
- 39 %on average
- Hot days
- 11 days30 °C or more
- Time zone
- UTC−4America/Puerto_Rico
How the score comes together
- Temperatureweight 50 %70 %
- Sunshineweight 20 %83 %
- Few rainy daysweight 30 %66 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in March
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Water bottle – drink plenty
- Insect repellent
- Rain jacket or umbrella
San Juan, Puerto Rico in March: quick answers
Is San Juan, Puerto Rico hot in March?
Yes. In March, San Juan, Puerto Rico is hot: daytime highs average 29 °C and nights stay around 22 °C. On about 11 days the thermometer climbs to 30 °C or more.
Can you swim in San Juan, Puerto Rico in March?
Yes. In March the sea averages 26.3 °C – lovely and warm for swimming.
Does it rain much in San Juan, Puerto Rico in March?
Rain falls on about 9 days, adding up to 42 mm.
San Juan, Puerto Rico month by month
The whole year in San Juan, Puerto RicoAll destinations: Puerto RicoWhere to go in MarchSea temperature in March
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)