Spring (March–May): Average 24.5–26.5°C, warm to hot temperatures, abundant sunshine, sparse rainfall, dry weather. Common activities: Beach leisure, water activities, exploring Old San Juan. Recommended attire: Lightweight breathable clothing, short sleeves, shorts, swimwear, sun hat, sunglasses.
Summer (June–August): Average 27–27.5°C, hot temperatures, higher humidity, lowest rainfall of the year, strong sunshine. Common activities: Enjoying sunny beaches, evening strolls, tasting local cuisine. Recommended attire: Extremely lightweight breathable clothing, shorts, short sleeves, sandals.
Autumn (September–November): Average 26–28°C, continuously hot temperatures, September and October are the hottest months of the year, rainfall slightly increases in November but remains generally low. Common activities: Exploring natural scenery, participating in cultural festivals, seaside leisure. Recommended attire: Light summer wear, light jacket (in case of occasional showers in November).
Winter (December–February): Average 23.5–25.5°C, warm and pleasant climate, the coolest and most comfortable season of the year, sparse rainfall. Common activities: Outdoor sports, sightseeing, enjoying resort facilities, an ideal time to escape the cold. Recommended attire: Short sleeves, shorts, lightweight long pants; a light jacket might be needed in the evening.
San Juan climatological average
Annual average temperature: approx. 26.0°C / Annual rainfall: approx. 67 mm / Summer humidity: 70-80% / Rainiest month: November
San Juan monthly average temperature and precipitation
Month
Air temperature (°C)
Precipitation (mm)
January
24.3°C
0.9
February
23.6°C
5.6
March
24.5°C
2
April
25.1°C
4.2
May
26.3°C
5.4
June
27.2°C
4.8
July
27.1°C
2.9
August
27.2°C
4
September
27.8°C
8.8
October
27.9°C
7.4
November
25.9°C
13.9
December
25.4°C
7.5
San Juan weather for the next seven days
7/4
Saturday
Patchy rain nearby
31.1°C/24.6°C
7/5
Sunday
Patchy rain nearby
30.9°C/24.1°C
7/6
Monday
Patchy rain nearby
29.9°C/24.3°C
7/7
Tuesday
Patchy rain nearby
30.3°C/24.3°C
7/8
Wednesday
Patchy rain nearby
29.1°C/24.8°C
7/9
Thursday
Patchy rain nearby
30.5°C/24.5°C
7/10
Friday
Patchy rain nearby
30.7°C/24.2°C
KKday App
Your Best Travel Buddy
Use the code APP5OFF to enjoy an exclusive in-app deal of 5% off (cap at USD$3) on your 1st orderScan here to download the app