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    Puerto Rico

    San Juan weather and climate

    Puerto Rico

    San Juan weather and climate

    Day

    31 °C

    Night

    23 °C

    Sea

    27 °C

    Precipitation

    172 mm

    in month

    Rainy days

    14 days

    in month

    Daylight

    13 hours

    average

    Sunshine

    8 hours

    average

    Humidity

    76 %

    Weather charts for San Juan

    JanFebMarAprMayJunJulAugSepOctNovDecTemperature (° C)1520253035Precipitation (mm)0200
    Weather overview
    JanFebMarAprMayJunJulAugSepOctNovDecTemperature (° C)1520253035Precipitation (mm)0200
    Wet days chart
    JanFebMarAprMayJunJulAugSepOctNovDecWet days81012141618208101214161820
    Sunhours per day chart
    JanFebMarAprMayJunJulAugSepOctNovDecSunhours per day46810124681012
    Wind chart
    JanFebMarAprMayJunJulAugSepOctNovDecWind024682468
    Humidity chart
    JanFebMarAprMayJunJulAugSepOctNovDecHumidity %65707580856570758085
    Data backed by 40 years of history

    We make the most from 40 years of historical weather data to predict the best weather conditions.

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    People on the beach in San Juan on a sunny day with some clouds
    Beach and countryside in San Juan at sunset time

    Destinations with similar weather to San Juan

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    Weather overview for San Juan

    Weather overview

    San Juan (Puerto Rico) in general has a tropical climate. Temperatures during the day are in the range from 29.1 °C (84.4 °F) in January to 32.2 °C (90.0 °F) in September. The highest sea temperatures in San Juan are in September with 28.7 °C (83.7 °F) and the lowest in February with 26.0 °C (78.8 °F). The least rainy month in San Juan is March with its 10 days of rain, the rainiest month is November, when it rains 18 days. Temperatures during the night go from 20.8 °C (69.4 °F) in January to 24.3 °C (75.7 °F) in July.

    January weather

    The day temperature reaches its minimum, with its value of 29.1 °C (84.4 °F) in San Juan, while the sea temperature continues to descent, the value of this measure is 26.3 °C (79.4 °F). There is pending tourist season. The number of rainy days continues to descent. The night temperature is on its minimum, with its value being 20.8 °C (69.4 °F). The beginning of the rise of the number of sun hours (without clouds) could be noticed, with its value of 8 hours.

    February weather

    The sea temperature reaches its minimum, with its value being 26.0 °C (78.8 °F) in San Juan. The ongoing tourist season is noticeable. The descent of the number of rainy days can be observed, its value is 11 days, while the rainfall amount reaches its minimum, its value is 68 mm (2.69 in). The number of sun hours (without clouds) rises similarly to the previous month, with its value of 8 hours.

    March weather

    There is pending tourist season in March in San Juan. The minimum of the number of rainy days is observable, with its value being 10 days. The day temperature starts to rise in March. The maximum of the number of sun hours (without clouds) is observable, its value is 9 hours. The minimum of the humidity can be noticed, with its value being 72 %.

    April weather

    The ongoing tourist season is noticeable in San Juan. The beginning of the rise of the sea temperature could be noticed, while the rise of the day temperature can be observed, the value of this measure is 30.4 °C (86.7 °F). The beginning of the rise of the number of rainy days could be noticed, and the rainfall amount rise's start could be observed too, with its value of 122 mm (4.80 in). The beginning of the rise of the night temperature could be noticed, the value of this measure is 21.9 °C (71.4 °F).

    May weather

    There is pending tourist season in San Juan. The rise of the day temperature can be observed, with its value being 31.2 °C (88.2 °F), and the sea temperature continues to rise as well, with its value of 27.2 °C (81.0 °F). The night temperature continues to rise, with its value of 22.9 °C (73.2 °F). The number of sun hours (without clouds) starts to descent. The rise of the rainfall amount can be observed, the value of this measure is 172 mm (6.77 in).

    June weather

    The ongoing tourist season is noticeable in San Juan. The sea temperature rises similarly to the previous month, with its value of 27.8 °C (82.0 °F), and the day temperature continues to rise as well, the value of this measure is 32.0 °C (89.6 °F). The beginning of the descent of the number of rainy days could be noticed, with its value of 13 days, and the beginning of the descent of the rainfall amount could be noticed too, with its value of 139 mm (5.47 in). The beginning of the rise of the number of sun hours (without clouds) could be noticed, with its value being 9 hours.

    July weather

    The beginning of the rise of the number of rainy days could be noticed, its value is 15 days in San Juan, and the rainfall amount rise's start could be observed as well in July. The ongoing tourist season is noticeable. The maximum of the night temperature can be noticed, its value is 24.3 °C (75.7 °F). The number of sun hours (without clouds) rises similarly to the previous month, with its value of 9 hours. The wind speed is on its maximum in July.

    August weather

    The beginning of the descent of the number of sun hours (without clouds) could be noticed, with its value being 9 hours in San Juan. The tourist season continues.

    September weather

    The day temperature is on its maximum, the value of this measure is 32.2 °C (90.0 °F) in San Juan, and the sea temperature reaches its maximum as well, with its value being 28.7 °C (83.7 °F). The beginning of the descent of the rainfall amount could be noticed, on the contrary the beginning of the rise of the number of rainy days could be noticed in this month. The descent of the number of sun hours (without clouds) can be observed, with its value being 8 hours.

    October weather

    The number of rainy days starts to descent, with its value being 16 days in San Juan. The night temperature starts to descent, with its value of 23.4 °C (74.1 °F). The number of sun hours (without clouds) continues to descent. The minimum of the wind speed can be noticed. The humidity reaches its maximum, the value of this measure is 77 %.

    November weather

    The sea temperature starts to descent, the value of this measure is 28.1 °C (82.5 °F) in San Juan, and the beginning of the descent of the day temperature could be noticed as well, with its value of 30.7 °C (87.3 °F). The number of rainy days is on its maximum, with its value being 18 days, and the maximum of the rainfall amount can be noticed too, its value is 186 mm (7.31 in). The number of sun hours (without clouds) reaches its minimum, its value is 7 hours. The night temperature descents similarly to the previous month, with its value being 22.6 °C (72.7 °F).

    December weather

    The tourist season is at its beginning in San Juan. The day temperature continues to descent, its value is 29.4 °C (84.9 °F), and the descent of the sea temperature can be observed too, with its value of 27.1 °C (80.7 °F). The number of rainy days starts to descent, and the beginning of the descent of the rainfall amount could be noticed too, with its value being 151 mm (5.96 in). The night temperature continues to descent, with its value of 21.7 °C (71.1 °F).

    FAQs

    Are there good conditions to visit in San Juan in January?

    In San Juan in January, there are ideal conditions for a vacation. The temperature during the day will be nice 29.1 °C (84.4 °F). The temperature of the sea will be perfect at 26.3 °C (79.4 °F). At night, temperatures hover around a pleasant 20.8 °C (69.4 °F).

    Is it hot in San Juan in February?

    In February in San Juan, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.

    Is March part of the wet season in San Juan?

    No, there is no wet season in San Juan in March - you can expect 10 days of rain during the month.

    What temperature can I expect during the day in San Juan in April?

    The average daily temperature in April in San Juan is 30.4 °C (86.7 °F). The great temperature for lying by the sea or pool and sunbathing, everywhere else you will probably be a bit hot. Don't forget to drink during the day, in these temperatures you should hydrate yourself a lot.

    What is the air temperature in May in San Juan at night?

    The average night temperature in May in San Juan is 22.9 °C (73.2 °F). A very pleasant temperature for long evening walks, fun over a drink outside, or doing sports in the morning. If possible, look for a hotel with air conditioning.

    What is the sea temperature in San Juan in June?

    The sea will reach 27.8 °C (82.0 °F) in San Juan in June. Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.

    How many days of precipitation on average can I expect in July in San Juan?

    In July in San Juan, we can expect 15 days to be rainy, that is, days when precipitation exceeds 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 3.6 days of the week, or in general - 51 % days.

    How many sunny hours can I expect in San Juan in August?

    In August in San Juan, you can expect around 9 hours of sunshine.

    What is the humidity in San Juan in September?

    Humidity in San Juan in September is 77 %. This humidity is rather above average, but except for sensitive individuals, it should not be a problem.

    How windy is it in San Juan in October?

    In October in San Juan, there will be an average wind scale of 2.9. It is rather a milder or unnoticeable wind, therefore it will not bother you during your holiday.

    Is December part of the dry season in San Juan?

    No, December is not a dry month in San Juan, expect rain approximately 16 days in a month.