San Juan Water Temperature

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San Juan is a city close to Atlantic Ocean. tropical rainforest climate would be the climate here. September is the month with the highest water temperature at 84.4°F / 29.1°C. The month with the lowest is March with an average water temperature of 78.8°F / 26°C. 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. February is the month with the min. precipitation of 1in / 25.1mm and September with the max. precipitation in a year with 5in / 127mm. If you plan to visit this place, the month January, February, March, April, May, June, July, August, September, October, November, December would be the best time.

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

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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
September is the month with the warmest water temperature at 84.4°F / 29.1°C. The month with the coldest is March with an average water temperature of 78.8°F / 26°C.

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San Juan weather today & 14-day weather forecast

Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Dec. 02
Thunderstorm with rain
75 °F
67°F
24 °C
19°C
3mph (4km/h)
northeast
0in (8mm)
75 %
89%
Dec. 03
Thunderstorm with rain
72 °F
61°F
22 °C
16°C
2mph (4km/h)
west-southwest
0in (9mm)
75 %
88%
Dec. 04
Light rain
77 °F
59°F
25 °C
15°C
2mph (3km/h)
southwest
0in (3mm)
55 %
84%
Dec. 05
Broken clouds
80 °F
65°F
27 °C
19°C
2mph (3km/h)
southeast
0in (1mm)
15 %
85%
Dec. 06
Moderate rain
76 °F
65°F
25 °C
18°C
2mph (3km/h)
east-southeast
0in (6mm)
65 %
85%
Dec. 07
Overcast clouds
84 °F
63°F
29 °C
17°C
2mph (3km/h)
southeast
0in (1mm)
25 %
78%
Dec. 08
Broken clouds
84 °F
71°F
29 °C
22°C
2mph (3km/h)
south-southwest
0in (0mm)
0 %
63%
Date
Weather
Max. F
Min. F
Max. C
Min. C
Windspeed
Windir.
Precip.
Rainrisk
Rel. Humidity
Dec. 09
Scattered clouds
92 °F
70°F
33 °C
21°C
4mph (7km/h)
south-southwest
0in (0mm)
15 %
52%
Dec. 10
Clear Sky
66 °F
58°F
19 °C
14°C
4mph (6km/h)
south-southwest
0in (0mm)
0 %
35%
Dec. 11
Scattered clouds
71 °F
54°F
22 °C
12°C
2mph (3km/h)
east-northeast
0in (0mm)
0 %
49%
Dec. 12
Overcast clouds
72 °F
61°F
22 °C
16°C
2mph (4km/h)
north-northeast
0in (0mm)
20 %
56%
Dec. 13
Few clouds
74 °F
55°F
23 °C
13°C
2mph (3km/h)
east-northeast
0in (0mm)
0 %
57%
Dec. 14
Overcast clouds
77 °F
59°F
25 °C
15°C
3mph (4km/h)
east-southeast
0in (0mm)
0 %
71%
Dec. 15
Overcast clouds
78 °F
65°F
25 °C
19°C
4mph (6km/h)
southeast
0in (0mm)
0 %
61%
Dec. 16
Few clouds
80 °F
65°F
27 °C
18°C
4mph (7km/h)
south-southeast
0in (0mm)
20 %
71%
Dec. 17
Overcast clouds
83 °F
68°F
28 °C
20°C
4mph (6km/h)
southeast
0in (1mm)
15 %
77%

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 month with the lowest rain of 1in / 25.1mm and September with the highest precipitation in a year with 5in / 127mm. The avg. 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 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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