September weather forecast
Palu, Indonesia

September stands out with the least cloud cover of the year at 37%, offering plenty of sunshine for outdoor enthusiasts. It follows the August trend with a slight decrease in rainfall and humidity, giving the city an almost dry texture. The temperatures are harmonious with previous months, inviting a constant blend of city and beach activities. September expects a normal 12.1 daylight hours, while allowing more sunshine time at about 9.7 hours per day. The tranquil wind speed of 4.5km/h (2.8mph) lingers on, perfect for adventurous visitors.

Temperature

Palu, Indonesia, starts September with an average high-temperature of a still warm 28.5°C (83.3°F), a minor shift from August's 28.3°C (82.9°F). September nights in Palu are marked by an average temperature drop to an agreeable 21.2°C (70.2°F).

Heat index

September's average heat index is evaluated at a hot 34°C (93.2°F). Emphasize additional safety, risk of heat cramps and heat exhaustion is high. Continuous activity might result in heatstroke.
Know that the heat index computations account for shaded terrains and slight winds. Heat index values may be hiked up by 15 Fahrenheit (8 Celsius) degrees under direct sunshine.
Note: The heat index, also known as 'felt air temperature' or 'real feel', shows a temperature sensation when both heat and moisture conditions are combined. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. With the sun shining directly, it's crucial to understand that it can increase the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.

Humidity

The months with the lowest humidity are January, February, September and October, with an average relative humidity of 84%.

Rainfall

September is the month with the least rainfall. Rain falls for 28.5 days and accumulates 156mm (6.14") of precipitation.

Sea temperature

In Palu, in September, the average water temperature is 29.2°C (84.6°F).
Note: For any water activity, the surface water temperatures in the range of 25°C (77°F) to 29°C (84.2°F) are deemed excellent and incredibly pleasant for longer durations.

Daylight

In September, the average length of the day in Palu is 12h and 7min.
On the first day of the month, sunrise is at 05:57 and sunset at 18:03. On the last day of September, in Palu, sunrise is at 05:46 and sunset at 17:54 WITA.

Sunshine

The month with the most sunshine is September, with an average of 9.7h of sunshine.

UV index

The months with the highest UV index in Palu are January through December, with an average maximum UV index of 6. January through December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index of 6 to 7 symbolizes a high health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The maximum UV index of 6 during September leads to these instructions:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Alert! UV radiation becomes sharper due to reflections from sand and water.