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    Hawaii

    Kauai weather and climate

    Hawaii

    Kauai weather and climate

    Day

    27 °C

    Night

    19 °C

    Sea

    25 °C

    Precipitation

    64 mm

    in month

    Rainy days

    11 days

    in month

    Daylight

    13 hours

    average

    Sunshine

    8 hours

    average

    Humidity

    74 %

    Weather charts for Kauai

    JanFebMarAprMayJunJulAugSepOctNovDecTemperature (° C)051015202530Precipitation (mm)0180
    Weather overview
    JanFebMarAprMayJunJulAugSepOctNovDecTemperature (° C)051015202530Precipitation (mm)0180
    Wet days chart
    JanFebMarAprMayJunJulAugSepOctNovDecWet days6810121468101214
    Sunhours per day chart
    JanFebMarAprMayJunJulAugSepOctNovDecSunhours per day02468101224681012
    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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    16 500 000 weather records

    We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.

    Aerial view of beach in Kauai in partly cloudy weather

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    Weather overview for Kauai

    Weather overview

    Kauai (United States of America) is a place with a tropical climate. The day temperatures range from 25.2 °C (77.4 °F) in January to 29.4 °C (84.9 °F) in August. The highest night temperatures could be experienced in August with 21.4 °C (70.5 °F), the lowest in February with 16.9 °C (62.4 °F). The highest sea temperatures in Kauai are in September with 26.7 °C (80.1 °F) and the lowest in February with 23.8 °C (74.8 °F). The driest month is January with just 10 days of rain, on the contrary, the month when it rains the most is July with 12 days of rain.

    January weather

    The tourist season is taking place in Kauai. The sea temperature continues to descent, with its value of 24.1 °C (75.4 °F), while the minimum of the day temperature is observable in January. The number of rainy days is on its minimum, with its value being 10 days, while the rainfall amount starts to descent, with its value of 159 mm (6.28 in). The night temperature descents similarly to the previous month, its value is 17.1 °C (62.8 °F).

    February weather

    The sea temperature is on its minimum, with its value being 23.8 °C (74.8 °F) in Kauai, and the night temperature is on its minimum as well in February. The rainfall amount descents similarly to the previous month, while the beginning of the rise of the number of rainy days could be noticed in this month. The number of sun hours (without clouds) rises similarly to the previous month, its value is 7 hours.

    March weather

    The number of rainy days continues to rise in Kauai, while the beginning of the rise of the rainfall amount could be noticed. The night temperature rise's start could be observed in this month.

    April weather

    The beginning of the rise of the day temperature could be noticed, with its value being 26.2 °C (79.2 °F) in Kauai, while the rise of the night temperature can be observed, its value is 18.4 °C (65.1 °F). The rainfall amount descent's start could be observed, with its value being 69 mm (2.73 in). The tourist season is about to start.

    May weather

    The day temperature continues to rise, with its value of 27.2 °C (81.0 °F) in Kauai, while the beginning of the rise of the sea temperature could be noticed, with its value of 24.8 °C (76.6 °F). The tourist season is taking place. The number of rainy days descent's start could be observed. The wind speed reaches its minimum, with its value of 3.8. The number of sun hours (without clouds) starts to rise in this month.

    June weather

    The rise of the day temperature can be observed, with its value being 28.3 °C (82.9 °F) in Kauai, and the sea temperature rises similarly to the previous month as well, the value of this measure is 25.5 °C (77.9 °F). There is pending tourist season. The minimum of the rainfall amount can be noticed in this month. The number of sun hours (without clouds) rises similarly to the previous month, its value is 8 hours. The night temperature continues to rise, its value is 20.8 °C (69.4 °F).

    July weather

    The rise of the day temperature can be observed, with its value being 28.9 °C (84.0 °F) in Kauai. The maximum of the number of rainy days is observable, with its value being 12 days, while the beginning of the rise of the rainfall amount could be noticed in July. There is pending tourist season this month.

    August weather

    The tourist season continues in Kauai. The day temperature is on its maximum, with its value being 29.4 °C (84.9 °F), and the night temperature reaches its maximum as well in this month. The number of rainy days descent's start could be observed, its value is 11 days. The maximum of the number of sun hours (without clouds) can be noticed, with its value of 8 hours. The maximum of the wind speed is observable in this month.

    September weather

    The sea temperature is on its maximum, with its value of 26.7 °C (80.1 °F) in Kauai. The beginning of the rise of the number of rainy days could be noticed, its value is 12 days, on the contrary the beginning of the descent of the rainfall amount could be noticed, with its value being 53 mm (2.08 in). The tourist season is close to its peak. The number of sun hours (without clouds) starts to descent.

    October weather

    There is pending tourist season in Kauai. The day temperature starts to descent in this month. The number of sun hours (without clouds) descents similarly to the previous month, with its value of 7 hours. The beginning of the rise of the rainfall amount could be noticed, its value is 91 mm (3.59 in).

    November weather

    The day temperature continues to descent, the value of this measure is 27.0 °C (80.6 °F) in Kauai, while the sea temperature starts to descent in November. The tourist season is taking place. The rainfall amount continues to rise, the value of this measure is 101 mm (3.97 in). The descent of the number of sun hours (without clouds) can be observed, with its value being 5 hours. The beginning of the descent of the night temperature could be noticed, its value is 19.7 °C (67.5 °F).

    December weather

    The tourist season is taking place this month in Kauai. The day temperature continues to descent, its value is 25.9 °C (78.6 °F), and the sea temperature continues to descent too, with its value of 24.9 °C (76.8 °F). The maximum of the rainfall amount can be noticed, with its value being 165 mm (6.50 in). The night temperature descents similarly to the previous month, with its value being 18.3 °C (64.9 °F). The number of sun hours (without clouds) reaches its minimum in this month.

    FAQs

    How many hours of sun to expect in January in Kauai?

    In Kauai in January, you can expect around 6 hours of sunshine.

    What level of humidity is to expect in March in Kauai?

    In March in Kauai, expect humidity around 74 %.

    Is April part of the dry season in Kauai?

    No, April is not a dry month in Kauai, expect rain approximately 12 days in a month.

    What is the night temperature in May in Kauai?

    The average night temperature in May in Kauai is 19.3 °C (66.7 °F). This temperature is pleasant for a wide range of evening, night, and morning activities from sports to sitting outside in restaurants or evening walks.

    Is June part of the wet season in Kauai?

    No, there is no wet season in June in Kauai - you can expect 11 days of rain during the month.

    Is July a good month to visit Kauai?

    In July in Kauai, there are ideal conditions for a vacation. The daily temperatures in this month reach pleasant 28.9 °C (84.0 °F). The temperature of the sea will be perfect at 25.9 °C (78.7 °F). At night, temperatures hover around a pleasant 21.2 °C (70.2 °F).

    Is it hot in Kauai in August?

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

    What is the sea temperature in Kauai in September?

    The sea will reach 26.7 °C (80.1 °F) in Kauai in September. Seems like an ideal temperature for swimming, you can stay in the sea for a long time and enjoy it as well.

    What temperature can I expect during the day in October in Kauai?

    The average daily temperature in October in Kauai is 28.4 °C (83.1 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.

    How many rainy days can I expect in November in Kauai?

    In November in Kauai, we can expect 11 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 2.6 days of the week, or in general - 38 % days.

    How windy is it in December in Kauai?

    An average wind scale that can be expected in Kauai in December is 4.0.