San Juan Water Temperature

San Juan is a city close to Atlantic Ocean. September is the month with the hottest water temperature at 84.4°F / 29.1°C. The coldest month is March with an ø water temperature of 78.8°F / 26°C. February is the month with the lowest precipitation of 1in / 25.1mm and September with the highest precipitation in a year with 5in / 127mm. The avg. air temperature is around 76.3°F / 24.6°C, July is the month with the highest temperature. January is the coolest with 70.3°F / 21.3°C average air temperature. January, February, March, April, May, June, July, August, September, October, November, December would be the best time to visit. tropical rainforest climate would be the climate here.

San Juan Summary

Description Value
Current water temperature /
Warmest Month Water Temperature: September with 84.4°F / 29.1°C
Coldest Month Water Temperature: March with 78.8°F / 26°C
Warmest Month Air Temperature: July with 76.3°F / 24.6°C
Coldest Month Air Temperature: January with 70.3°F / 21.3°C
Wettest Month: September with 5in / 127mm
Driest Month: February with 1in / 25.1mm
Highest Humidity October with 85.1%
Lowest Humidity March with 72.7%
Best Time to Visit: January, February, March, April, May, June, July, August, September, October, November, December
Climate Classification tropical rainforest climate

San Juan water temperature by month

Atlantic Ocean water temperature by month

Max. Water

Temperature (°F)

ø. Water

Temperature (°F)

Min. Water

Temperature (°F)

January

80.2 79.7 79.2

February

79.2 78.8 78.6

March

79.2 78.8 78.6

April

80.4 79.5 79

May

81.7 80.8 80.4

June

82.6 82.2 81.5

July

83.5 82.8 82.4

August

84 83.7 83.1

September

84.6 84.2 83.7

October

84.4 84.2 83.8

November

83.8 82.9 82

December

82 81.1 80.4

Atlantic Ocean water temperature by month

Max. Water

Temperature (°C)

ø. Water

Temperature (°C)

Min. Water

Temperature (°C)

January

26.8 26.5 26.2

February

26.2 26 25.9

March

26.2 26 25.9

April

26.9 26.4 26.1

May

27.6 27.1 26.9

June

28.1 27.9 27.5

July

28.6 28.2 28

August

28.9 28.7 28.4

September

29.2 29 28.7

October

29.1 29 28.8

November

28.8 28.3 27.8

December

27.8 27.3 26.9
The hottest water temperature typically reached in September with around 84.4°F / 29.1°C. The coldest in March with an average water temperature of 78.8°F / 26°C.

San Juan weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Feb. 04
Few clouds
75 °F
44°F
24 °C
7°C
2mph (3km/h)
east
0in (0mm)
0 %
69%
Feb. 05
Scattered clouds
80 °F
52°F
27 °C
11°C
2mph (3km/h)
south-southeast
0in (0mm)
0 %
77%
Feb. 06
Overcast clouds
79 °F
62°F
26 °C
16°C
4mph (7km/h)
south-southeast
0in (0mm)
10 %
81%
Feb. 07
Broken clouds
87 °F
70°F
30 °C
21°C
6mph (9km/h)
south-southeast
0in (0mm)
20 %
72%
Feb. 08
Overcast clouds
71 °F
57°F
22 °C
14°C
4mph (7km/h)
west
0in (1mm)
15 %
78%
Feb. 09
Few clouds
76 °F
50°F
25 °C
10°C
2mph (4km/h)
west
0in (1mm)
20 %
39%
Feb. 10
Broken clouds
67 °F
56°F
19 °C
13°C
4mph (6km/h)
west-southwest
0in (0mm)
0 %
39%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Feb. 11
Broken clouds
61 °F
45°F
16 °C
7°C
3mph (4km/h)
east
0in (0mm)
0 %
30%
Feb. 12
Broken clouds
71 °F
49°F
22 °C
10°C
4mph (6km/h)
southeast
0in (0mm)
0 %
55%
Feb. 13
Overcast clouds
75 °F
62°F
24 °C
17°C
5mph (7km/h)
south-southeast
0in (0mm)
10 %
74%
Feb. 14
Broken clouds
80 °F
68°F
27 °C
20°C
4mph (7km/h)
south
0in (0mm)
10 %
69%
Feb. 15
Few clouds
59 °F
44°F
15 °C
7°C
5mph (8km/h)
north
0in (0mm)
0 %
39%
Feb. 16
Scattered clouds
71 °F
49°F
21 °C
10°C
3mph (6km/h)
southeast
0in (0mm)
0 %
56%
Feb. 17
Broken clouds
74 °F
61°F
24 °C
16°C
2mph (4km/h)
east
0in (0mm)
20 %
75%
Feb. 18
Light shower rain
77 °F
60°F
25 °C
15°C
2mph (4km/h)
south-southeast
0in (5mm)
70 %
84%
Feb. 19
Few clouds
80 °F
70°F
27 °C
21°C
5mph (8km/h)
west-southwest
0in (0mm)
0 %
71%

San Juan weather by month / climate table

Max.

Temperature

°F

ø.

Temperature

°F

Min.

Temperature

(°F)

Precip.

(in)

Rainy Days

(d)

Rel. Humidity

(%)

January

78.3 70.3 64.2 1.2 0 78.6%

February

79.5 70.5 64.2 1 0 74.7%

March

81 71.2 64.4 1.5 2 72.7%

April

81.1 72.3 65.7 2.6 11 76.2%

May

81.9 73.8 68 4.1 17 79.9%

June

84 75.7 70 2.4 7 78.3%

July

84.9 76.3 70.7 2.3 8 76.7%

August

84.6 76.3 71.2 3.3 16 79.2%

September

83.5 75.6 70.7 5 24 83.1%

October

81.9 74.5 69.8 4.3 0 85.1%

November

80.1 72.5 66.6 3.7 13 84.8%

December

78.3 71.1 66 1.6 1 81.6%

Max.

Temperature

°C

ø.

Temperature

°C

Min.

Temperature

(°C)

Precip.

(mm)

Rainy Days

(d)

Rel. Humidity

(%)

January

25.7 21.3 17.9 30 0 78.6%

February

26.4 21.4 17.9 25.1 0 74.7%

March

27.2 21.8 18 39.1 2 72.7%

April

27.3 22.4 18.7 66.3 11 76.2%

May

27.7 23.2 20 103.7 17 79.9%

June

28.9 24.3 21.1 62.1 7 78.3%

July

29.4 24.6 21.5 58.7 8 76.7%

August

29.2 24.6 21.8 83.4 16 79.2%

September

28.6 24.2 21.5 127 24 83.1%

October

27.7 23.6 21 110 0 85.1%

November

26.7 22.5 19.2 94.4 13 84.8%

December

25.7 21.7 18.9 40.7 1 81.6%
February is the most draught at 1in / 25.1mm and September the month with the most rain around 5in / 127mm. The avg. temperature is around 76.3°F / 24.6°C, July is the hottest month in a year. January is the coolest with 70.3°F / 21.3°C avg. temperature.

Activities & POI in San Juan

Type of Activity List
Beach Condado Beach, Playita de Condado, Playa del Caribe Hilton, Balneario Escambrón II, Punta Salinas, Balneario Escambrón
Marina for Sailing, Boat adventures, fishing Club Náutico de San Juan
Attraction Sede Central del Sitio Histórico Nacional de San Juan, Viejo San Juan, ArtLab, Club Maya Salón de Actividades, Capitolio de Puerto Rico, Castillo San Cristóbal, Casa Aboy, La Garita Del Diablo, Fuerte San Felipe del Morro
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