Weather in Rarotonga, The Cook Islands in September

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Visiting Rarotonga, The Cook Islands in September

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

The weather in September is marginally warmer than the previous month and temperatures continue to rise slightly into October. September has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright.

September has total rainfall of 12.1cm (4.8inches) making it quite dry with only moderate showers. There are just 6.2 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.

Sea temperatures are a warm 25°C (76°F). September is a good month for swimming in Rarotonga with comfortable temperatures for most people. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.

September in Rarotonga sees a gradual increase in temperature and humidity, but the weather remains comfortable for beach activities. Swimming, snorkeling, and sunbathing are all enjoyable, with clear waters and pleasant temperatures. Surfing, windsurfing, and kitesurfing continue to be popular due to the favorable wind and wave conditions. Also consider visiting Rarotonga in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Rarotonga in September?

Yes, September is a good time for sunbathing in Rarotonga.

September has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright. September has total rainfall of 12.1cm (4.8inches) making it quite dry with only moderate showers. There are just 6.2 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days.

More about September temperature and sunshine.

Can you swim in Rarotonga in September?

Yes, September is a good month for swimming in Rarotonga with warm sea temperatures 25°C (76°F).

More about September sea temperatures.

Is September a good time to holiday in Rarotonga?

Yes, September is a great time for a holiday in Rarotonga.

September has average maximum temperatures of 26°C (78°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright. September has total rainfall of 12.1cm (4.8inches) making it quite dry with only moderate showers. There are just 6.2 days with some rainfall so you can still enjoy the beach on the majority of rain free clear days. Sea temperatures are a warm 25°C (76°F). September is a good month for swimming in Rarotonga with comfortable temperatures for most people.

More about the September temperatures and sunshine.

Is Rarotonga warm in September?

Yes, Rarotonga is very warm and perfect for sunbathing on clear days in September.

The average maximum temperature in Rarotonga in September is 26°C (78°F). The average maximum temperature is 25°C (77°) in the previous month and 27°C (80°F) in the next month.

The average temperature in Rarotonga in September is 23°C (73°F). The average temperature is 22°C (72°F) in the previous month and 24°C (75°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Rarotonga in September?

The average day light hours per day in Rarotonga in September are 12. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright.

More about September sunshine.

Crowds in Rarotonga in September

September is still part of the high season in Rarotonga, but the crowds begin to thin out slightly as the month progresses. The beaches can still be busy, but there is generally more space available for visitors. There are no significant public holidays or events in September that would affect the crowds.

Temperature in Rarotonga in September

The weather in September is marginally warmer than the previous month and temperatures continue to rise slightly into October. The average maximum temperature in Rarotonga in September is 26°C (78°F). The average maximum temperature is 25°C (77°F) in the previous month and 27°C (80°F) in the next month.

The average temperature in Rarotonga in September is 23°C (73°F). The average temperature is 22°C (72°F) in the previous month and 24°C (75°F) in the next month.

The average minimum temperature in Rarotonga in September is 21°C (70°F). The minimum temperature is 20°C (68°F) in the previous month and 22°C (71°F) in the next month.

Sunshine in Rarotonga in September

The days in September are longer than the previous month and the days continue to get slightly longer into October. During September the average day light hours are 12 per day in Rarotonga. The sunshine percentage is 65% making it sunny but overcast at times. The hours of sunshine per day are 7.8hrs making the days quite long and bright.

The ultraviolet index in Rarotonga in September is typically 11 during September. 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 Rarotonga in September

The average sea water temperature in Rarotonga in September is 24.7°C (76.5°F) which is warm and pleasant for relaxing and swimming for long periods. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.

Rainfall in Rarotonga in September

September weather is marginally drier than the previous month and rainfall continues to drop slightly into October. September has a couple of more days of rain than the previous month and rainy days continue to rise slightly into October. The average total rainfall in Rarotonga in September is 12.1cm (4.8inches) and on average there are 6.2 rainy days in September making it a quite rainy time to visit the beach.

Humidity in Rarotonga in September

The maximum dew point (an indicator of humidity) in Rarotonga in September is 21°C (70°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 20°C (68°F) in the previous month and 22°C (22°F) in the next month.

The average maximum relative humidity in Rarotonga in September is typically 89.4%. The maximum relative humidity is 89% in the previous month and 89.8% in the next month.

The average relative humidity in Rarotonga in September is typically 78%. The average relative humidity is 76.2% in the previous month and 78.3% in the next month.

Wind Speed in Rarotonga in September

The average maximum wind speed in Rarotonga in September is typically 26KM/H (16MPH). The average maximum wind speed is 26KM/H (16MPH) in the previous month and 25KM/H (15MPH) in the next month.

The average wind speed in Rarotonga in September is typically 15KM/H (9MPH). The average wind speed is 14KM/H (9MPH) in the previous month and 14KM/H (9MPH) in the next month.

The average wind direction in Rarotonga in September is from the East-Southeast.

Monthly Averages

Suggested Beaches in September

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Need Inspiration?

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