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Best
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Best
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Best
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Best
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Tan
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Tan
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Sea
19°
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19°
Swim
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18°
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17°
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16°
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Sea
14°
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Sea
13°
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Sea
13°
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Sea
14°
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14°
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Sea
15°
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Sea
16°
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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 15°C (59°F) which is a little too chilly for sunbathing. The sunshine percentage is 48.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.7 hours of sunshine per day. It is not a good time for sunbathing in Stewart Island.
September has total rainfall of 4.5cm (1.8inches) making it mostly dry but with short lived occasional showers. There are only 14.8 days with some rainfall so you can still enjoy the beach on the majority of days.
Sea temperatures are a cold 14°C (56°F). September is too cold for swimming in Stewart Island for any length of time, unless you have a wetsuit. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.
Consider visiting Stewart Island in the months of January, February, March, December, for the best beach weather. Also consider one of our other suggestions for September.
No, September is not a good time for sunbathing in Stewart Island.
September has average maximum temperatures of 15°C (59°F) which is a little too chilly for sunbathing. The sunshine percentage is 48.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.7 hours of sunshine per day. September has total rainfall of 4.5cm (1.8inches) making it mostly dry but with short lived occasional showers. There are only 14.8 days with some rainfall so you can still enjoy the beach on the majority of days.
More about September temperature and sunshine.
No, September is too cold for swimming in Stewart Island for any length of time, with the sea water at 14°C (56°F), unless you have a wetsuit.
More about September sea temperatures.
No, September is not a good time for a holiday in Stewart Island.
September has average maximum temperatures of 15°C (59°F) which is a little too chilly for sunbathing. The sunshine percentage is 48.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.7 hours of sunshine per day. September has total rainfall of 4.5cm (1.8inches) making it mostly dry but with short lived occasional showers. There are only 14.8 days with some rainfall so you can still enjoy the beach on the majority of days. It is not a good time for sunbathing in Stewart Island. Sea temperatures are a cold 14°C (56°F). September is too cold for swimming in Stewart Island for any length of time, unless you have a wetsuit.
More about the September temperatures and sunshine.
No, Stewart Island is a little too chilly for sunbathing in September.
The average maximum temperature in Stewart Island in September is 15°C (59°F). The average maximum temperature is 13°C (55°) in the previous month and 16°C (61°F) in the next month.
The average temperature in Stewart Island in September is 11°C (52°F). The average temperature is 10°C (49°F) in the previous month and 13°C (55°F) in the next month.
More info about the September temperatures and sunshine.
The average day light hours per day in Stewart Island in September are 11.8. The sunshine percentage is 48.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.7 hours of sunshine per day.
More about September sunshine.
The weather in September is marginally warmer than the previous month and temperatures continue to rise slightly into October. The average maximum temperature in Stewart Island in September is 15°C (59°F). The average maximum temperature is 13°C (55°F) in the previous month and 16°C (61°F) in the next month.
The average temperature in Stewart Island in September is 11°C (52°F). The average temperature is 10°C (49°F) in the previous month and 13°C (55°F) in the next month.
The average minimum temperature in Stewart Island in September is 9°C (47°F). The minimum temperature is 7°C (45°F) in the previous month and 10°C (50°F) in the next month.
The days in September are much longer than the previous month and the days continue to get a bit longer into October. September has slightly more hours of sunshine than the previous month and hours of sunshine continue to rise slightly into October. During September the average day light hours are 11.8 per day in Stewart Island. The sunshine percentage is 48.5% making it quite sunny but with regular periods of cloudy and overcast skies. There are 5.7 hours of sunshine per day.
The ultraviolet index in Stewart Island in September is typically 5.4 during September. An ultraviolet index reading of 3 to 5 indicates there is a moderate risk of harm from unprotected sun exposure. Keep out of the sun during the strongest hours around midday when unprotected skin risks burning in less than 30 minutes. For the sensitive 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, and after swimming or sweating. Tanning for hours is possible with the right application of sun cream. Watch out for relections from water that may increase ultraviolet exposure.
The average sea water temperature in Stewart Island in September is 13.6°C (56.5°F) which is cold for swimming, a full wet suit is required to spend any length of time in the sea. The sea temperature in September is marginally warmer than the previous month and temperatures continue to rise slightly into October.
September weather is marginally drier than the previous month and rainfall continues to drop slightly into October. September has a couple of less days of rain than the previous month and rainy days continue to drop slightly into October. The average total rainfall in Stewart Island in September is 4.5cm (1.8inches) and on average there are 14.8 rainy days in September making it a pretty wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Stewart Island in September is 8°C (46°F) which is a bit dry for some. The dew point is 7°C (44°F) in the previous month and 8°C (8°F) in the next month.
The average maximum relative humidity in Stewart Island in September is typically 60.5%. The maximum relative humidity is 60.5% in the previous month and 59% in the next month.
The average relative humidity in Stewart Island in September is typically 51.8%. The average relative humidity is 52.7% in the previous month and 49.6% in the next month.
The average maximum wind speed in Stewart Island in September is typically 19KM/H (12MPH). The average maximum wind speed is 18KM/H (11MPH) in the previous month and 21KM/H (13MPH) in the next month.
The average wind speed in Stewart Island in September is typically 11KM/H (7MPH). The average wind speed is 10KM/H (6MPH) in the previous month and 12KM/H (8MPH) in the next month.
The average wind direction in Stewart Island in September is from the South-Southwest.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
