End of the drier season · Weather & things to do
Old San Juan in April
Little changes in Old San Juan from March: highs stay near 84°F (29°C), lows near 75°F (24°C), and about 3.0 in (77 mm) of rain falls.
It scores 73/100 for comfort, 5th of 12, which makes it a solid shoulder-season month.
- Avg high
- 84°F (29°C)
- Avg low
- 75°F (24°C)
- Rain
- 3.0 in (77 mm)
- Humidity
- 74%
- Cloud cover
- 64%
- Daylight
- ~12 h 25 min
- Comfort score
- 73/100 · Good
What April feels like
Days are warm, averaging 84°F (29°C), easy weather for being outside from morning to evening.
Even at night it stays warm, around 75°F (24°C).
Some rain is likely, about 3.0 in (77 mm) in the month, so pack for a shower or two.
Plan around April
April is shoulder season: good weather, a step below the best months (December – March).
- Comfort slips from 79/100 in March to 73/100.
- Our Old San Juan & Ponce route is planned for Dec – mid-Jan, a window set by the holiday season rather than the weather — April falls outside it.
What to pack for April
- Light, breathable clothes84°F afternoons
- Sunscreen, sunglasses and a hathigh UV on clear days
- Packable rain jacket or umbrellaa shower or two is likely
- Comfortable walking shoesmost picks involve some walking
What to do in Old San Juan in April
April is good outdoor weather here, so these picks lean toward the open air.
Catedral de San Juan Bautista
One of the oldest cathedrals in the Americas, rebuilt in the 1800s, holding the tomb of Juan Ponce de Leon.
Castillo San Felipe del Morro
Six-level Spanish citadel begun in 1539 on the headland guarding San Juan Bay, part of a UNESCO World Heritage Site.
Casa Cortes ChocoBar
Cafe run by the Cortes chocolate family, serving hot chocolate with cheese, chocolate dishes and breakfast.
Paseo de la Princesa
Tree-lined 19th-century promenade along the bay under the city walls, ending at the Raices fountain.
Why now April scores 73/100 for comfort, good conditions for being outside.
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 Highs near 84°F and 3.0 in of monthly rain make this an easy outdoor pick.
Nearby in April
- Ponce in April~46 mi · highs 86°F, 2.9 in rain · similar daytime temperatures, about as wet
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 April: quick answers
Is April a good time to visit Old San Juan?
It's a good shoulder-season choice, scoring 73/100 against a best of 82 in December – March. Expect highs of 84°F (29°C) and 3.0 in (77 mm) of rain.
How hot is Old San Juan in April?
Average highs are 84°F (29°C) and average lows 75°F (24°C), making it the 6th-coldest month by daytime highs.
Does it rain a lot in Old San Juan in April?
Some: about 3.0 in (77 mm) of rain falls across April on average, the 5th-driest month of the year. The annual total is about 47.5 in (1207 mm).
What should I pack for Old San Juan in April?
Bring light, breathable clothes (84°F afternoons), sunscreen, sunglasses and a hat (high UV on clear days), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most picks involve some walking).
More on Old San Juan
Planning Old San Juan in April?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.