Measurements:
°C
°F
CURRENT WEATHER
02:47
San Juan
82°F
NW 4 mph
Feels like: 88°F
Precip: 10%
World Resorts Puerto Rico San Juan Weather

7 Day Weather Forecast

10.19
mon
DAY
90°F
SW 11 mph
precip
5%
NIGHT
82°F
NW 6 mph
precip
10%
10.20
tue
DAY
90°F
W 12 mph
precip
14%
NIGHT
82°F
NW 5 mph
precip
11%
10.21
wed
DAY
92°F
W 10 mph
precip
12%
NIGHT
82°F
NW 6 mph
precip
17%
10.22
thu
DAY
88°F
W 9 mph
precip
17%
NIGHT
84°F
NW 7 mph
precip
24%
10.23
fri
DAY
88°F
NW 10 mph
precip
17%
NIGHT
82°F
NW 7 mph
precip
56%
10.24
sat
DAY
92°F
NW 10 mph
precip
11%
NIGHT
82°F
NW 7 mph
precip
24%
10.25
sun
DAY
92°F
NW 9 mph
precip
8%
NIGHT
82°F
N 6 mph
precip
23%

San Juan Sea Water Temperature in October, °F

Select Year: 2026 2025 2024

The average sea surface temperature in October 2026 for San Juan was 29.8°F. The maximum and minimum values were 29.7°F and 30.1°F respectively.

San Juan on the Weather Map

Best Time to Visit San Juan
The most sunny months:
June 9 days
March 9 days
October 9 days
The most warm months:
September 91.1 °F
August 91.0 °F
July 90.6 °F
Warmest sea temperature:
September 88.8 °F
October 88.8 °F
August 87.8 °F
The most cold months:
February 84.0 °F
January 84.2 °F
March 84.7 °F
The most rainy months:
October 5 days
November 4 days
August 3 days
The most windy months:
July 12 mph
August 12 mph
June 12 mph
more details