October weather forecast
Naha, Japan

October sees Naha transitioning into the cooler and drier climate of autumn. The average temperatures experience a noticeable drop, providing relief from the summer heat. Along with declining temperatures, there is a reduction in rainfall with the total precipitation amounting to 153mm (6.02"). The ambiance of the city follows the rhythm of the changing seasons with flora and landscape reflecting vibrant autumn hues. Sea temperatures start to decline but stay enjoyable for aquatic activities.

Temperature

Naha notes an average high-temperature of a moderately hot 27.9°C (82.2°F) in October, hardly diverging from September. October nights witness a slight temperature decrease, averaging at 23.1°C (73.6°F).

Heat index

The heat index value during October is estimated at a hot 31°C (87.8°F). Persistent activity under exposure might lead to a feeling of weariness, with subsequent heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculation that merges air temperature and relative humidity to depict the sensation of warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Sunshine, when direct, has the potential to intensify weather effects, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.

Humidity

The average relative humidity in October is 71%.

Rainfall

In Naha, during October, the rain falls for 9.5 days and regularly aggregates up to 153mm (6.02") of precipitation. Throughout the year, in Naha, there are 140.8 rainfall days, and 2037mm (80.2") of precipitation is accumulated.

Sea temperature

In October, the average sea temperature in Naha is 27.2°C (81°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are regarded as highly pleasant, making all water activities enjoyable without any discomfort over long durations.

Daylight

In Naha, the average length of the day in October is 11h and 33min.
On the first day of October, sunrise is at 06:21 and sunset at 18:16. On the last day of the month, sunrise is at 06:37 and sunset at 17:48 JST.

Sunshine

In Naha, the average sunshine in October is 5.5h.

UV index

The average daily maximum UV index in October in Naha is 8. A UV Index reading of 8 to 10 represents a very high health hazard from exposure to the Sun's UV rays for the average person.
Note: During October, 8 as the daily maximum UV index converts into the following advice:
Refrain from exposing skin and eyes. Without protection, they can get damaged rapidly. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Heed this! UV intensity is much stronger when reflected off sand and water.