Weather in Kauai Island, United States in May

Search

Best
Best
Best
Best
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Tan
Sea
25°
Swim
Sea
24°
Swim
Sea
24°
Swim
Sea
25°
Swim
Sea
26°
Swim
Sea
27°
Swim
Sea
27°
Swim
Sea
27°
Swim
Sea
28°
Swim
Sea
28°
Swim
Sea
26°
Swim
Sea
25°
Swim

Visiting Kauai Island, United States in May

May is one of the best months to visit Kauai Island for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. May has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 62% making it sunny but overcast at times. The hours of sunshine per day are 8.2hrs making the days long and bright.

May has total rainfall of 4.8cm (1.9inches) making it mostly dry with very rare light showers although there are 15.1 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much.

Sea temperatures are a very warm 26°C (79°F). May is an excellent month for swimming in Kauai Island with very comfortable temperatures for bathing all day. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Also consider visiting Kauai Island in one of the other best months of April, August, September, for the best beach weather. Also consider one of our other suggestions for May.

Can you sunbathe in Kauai Island in May?

Yes, May is a good time for sunbathing in Kauai Island.

May has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 62% making it sunny but overcast at times. The hours of sunshine per day are 8.2hrs making the days long and bright. May has total rainfall of 4.8cm (1.9inches) making it mostly dry with very rare light showers although there are 15.1 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much.

More about May temperature and sunshine.

Can you swim in Kauai Island in May?

Yes, May is an excellent month for swimming in Kauai Island with very warm sea temperatures 26°C (79°F).

More about May sea temperatures.

Is May a good time to holiday in Kauai Island?

Yes, May is a good time for a holiday in Kauai Island.

May has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 62% making it sunny but overcast at times. The hours of sunshine per day are 8.2hrs making the days long and bright. May has total rainfall of 4.8cm (1.9inches) making it mostly dry with very rare light showers although there are 15.1 days with some rainfall, so on the days it does rain it is only light and intermittent and shouldn't affect your beach enjoyment too much. Sea temperatures are a very warm 26°C (79°F). May is an excellent month for swimming in Kauai Island with very comfortable temperatures for bathing all day.

More about the May temperatures and sunshine.

Is Kauai Island warm in May?

Yes, Kauai Island is very warm and perfect for sunbathing on clear days in May.

The average maximum temperature in Kauai Island in May is 28°C (82°F). The average maximum temperature is 26°C (80°) in the previous month and 28°C (83°F) in the next month.

The average temperature in Kauai Island in May is 25°C (76°F). The average temperature is 23°C (74°F) in the previous month and 26°C (78°F) in the next month.

More info about the May temperatures and sunshine.

How sunny is Kauai Island in May?

The average day light hours per day in Kauai Island in May are 13.2. The sunshine percentage is 62% making it sunny but overcast at times. The hours of sunshine per day are 8.2hrs making the days long and bright.

More about May sunshine.

Temperature in Kauai Island in May

The weather in May is marginally warmer than the previous month and temperatures continue to rise slightly into June. The average maximum temperature in Kauai Island in May is 28°C (82°F). The average maximum temperature is 26°C (80°F) in the previous month and 28°C (83°F) in the next month.

The average temperature in Kauai Island in May is 25°C (76°F). The average temperature is 23°C (74°F) in the previous month and 26°C (78°F) in the next month.

The average minimum temperature in Kauai Island in May is 22°C (71°F). The minimum temperature is 20°C (69°F) in the previous month and 23°C (73°F) in the next month.

Sunshine in Kauai Island in May

The days in May are marginally longer than the previous month and the days continue to get marginally longer into June. May has less hours of sunshine than the previous month and hours of sunshine continue to drop quickly into June. During May the average day light hours are 13.2 per day in Kauai Island. The sunshine percentage is 62% making it sunny but overcast at times. The hours of sunshine per day are 8.2hrs making the days long and bright.

The ultraviolet index in Kauai Island in May is typically 12.5 during May. An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Kauai Island in May

The average sea water temperature in Kauai Island in May is 25.9°C (78.6°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in May is marginally warmer than the previous month and temperatures continue to rise slightly into June.

Rainfall in Kauai Island in May

May weather is slightly wetter than the previous month. May has fewer days of rain than the previous month. The average total rainfall in Kauai Island in May is 4.8cm (1.9inches) and on average there are 15.1 rainy days in May making it a wet time to visit the beach.

Humidity in Kauai Island in May

The maximum dew point (an indicator of humidity) in Kauai Island in May is 20°C (68°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 19°C (67°F) in the previous month and 21°C (21°F) in the next month.

The average maximum relative humidity in Kauai Island in May is typically 83.4%. The maximum relative humidity is 83.6% in the previous month and 82% in the next month.

The average relative humidity in Kauai Island in May is typically 71.8%. The average relative humidity is 72.2% in the previous month and 70.8% in the next month.

Wind Speed in Kauai Island in May

The average maximum wind speed in Kauai Island in May is typically 27KM/H (17MPH). The average maximum wind speed is 29KM/H (18MPH) in the previous month and 29KM/H (18MPH) in the next month.

The average wind speed in Kauai Island in May is typically 16KM/H (10MPH). The average wind speed is 18KM/H (11MPH) in the previous month and 18KM/H (11MPH) in the next month.

The average wind direction in Kauai Island in May is from the North-Northeast.

Monthly Averages

Suggested Beaches in May

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

Booking.com Search FlightsImage

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.