Middle of the drier season · Weather & things to do
Old San Juan in March
Little changes in Old San Juan from February: highs stay near 83°F (28°C), lows near 74°F (23°C), and about 2.4 in (61 mm) of rain falls.
At 79/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 83°F (28°C)
- Avg low
- 74°F (23°C)
- Rain
- 2.4 in (61 mm)
- Humidity
- 73%
- Cloud cover
- 63%
- Daylight
- ~11 h 52 min
- Comfort score
- 79/100 · Great
What March feels like
Highs settle around 83°F (28°C), warm enough for short sleeves most of the day.
Nights stay warm too, with lows averaging 74°F (23°C).
Showers are part of the month, adding up to about 2.4 in (61 mm).
Plan around March
March is one of Old San Juan's best months on the climate data.
- Last of the best-scoring months: by April, the score drops to 73/100.
- Comfort slips from 82/100 in February to 79/100.
- Our Old San Juan & Ponce route is planned for Dec – mid-Jan, a window set by the holiday season rather than the weather — March falls outside it.
What to pack for March
- Light, breathable clotheshighs average 83°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Packable rain jacket or umbrellaabout 2.4 in of rain
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Old San Juan in March
With conditions on your side, the picks below favor time outside.
Plaza de Armas
Main square of the old city, in front of City Hall, with the island's Christmas tree and lit trees in December.
Why now March scores 79/100 for comfort, good conditions for being outside.
Castillo San Cristobal
The largest Spanish fort in the Americas, completed in 1783, guarding the land approach to the old city.
La Factoria
Unsigned cocktail bar of linked rooms on Calle San Sebastian, with salsa dancing late into the night.
Paseo de la Princesa
Tree-lined 19th-century promenade along the bay under the city walls, ending at the Raices fountain.
Why now Highs near 83°F and 2.4 in of monthly rain make this an easy outdoor pick.
Calle de la Fortaleza
Shop-lined street ending at La Fortaleza, the governor's mansion since the 16th century, hung with wreaths at Christmas.
Why now One to do outside while the weather is on your side.
Nearby in March
- Ponce in March~46 mi · highs 85°F, 1.6 in rain · 1°C (2°F) warmer by day, drier
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Old San Juan in March: quick answers
Is March a good time to visit Old San Juan?
Yes. On the climate data it's one of the best months, scoring 79/100. Expect highs of 83°F (28°C) and 2.4 in (61 mm) of rain.
How hot is Old San Juan in March?
Average highs are 83°F (28°C) and average lows 74°F (23°C), making it the 4th-coldest month by daytime highs.
Does it rain a lot in Old San Juan in March?
Some: about 2.4 in (61 mm) of rain falls across March on average, the 3rd-driest month of the year. The annual total is about 47.5 in (1207 mm).
What should I pack for Old San Juan in March?
Bring light, breathable clothes (highs average 83°F), sunscreen, sunglasses and a hat (strong sun this month), packable rain jacket or umbrella (about 2.4 in of rain) and comfortable walking shoes (most places below are best reached on foot or with short walks).
More on Old San Juan
Planning Old San Juan in March?
Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.