September weather forecast
Penghu, Taiwan

September ushers in the onset of autumn and brings noticeable changes in the overall climate. September sees a welcome decrease in rainfall as compared to the preceding months, measuring approximately 137mm (5.39") over 12 days. Penghu enjoys an abundance of sunshine, keeping the sea suitably warm for swimming and other water activities. Due to shorter days and falling temperatures, it feels far from the sultry summer. Moving toward October, the weather continues with the downward trend in temperature.

Temperature

As August transitions into September, the average high-temperature rests at a still tropical 31°C (87.8°F), maintaining a close resemblance to the previous month. During the nights in September, Penghu experiences a consistent average temperature of 24°C (75.2°F).

Rainfall

In Penghu, in September, it is raining for 12 days, with typically 137mm (5.39") of accumulated precipitation. Throughout the year, there are 157 rainfall days, and 1552mm (61.1") of precipitation is accumulated.

Sea temperature

July through September, with an average sea temperature of 28°C (82.4°F), are months with the warmest seawater.
Note: Temperatures between 25°C (77°F) and 29°C (84.2°F) are excellent for swimming, diving, and other water activities, providing comfort and enjoyment for extended periods without discomfort.

Daylight

In September, the average length of the day is 12h and 17min.
On the first day of the month, sunrise is at 05:43 and sunset at 18:19. On the last day of September, sunrise is at 05:53 and sunset at 17:50 CST.

Sunshine

The average sunshine in September is 7h.

UV index

The average daily maximum UV index in September in Penghu is 11. A UV Index value of 11, and more, symbolizes an extreme threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A maximum high UV index of 11 in September translates into the following recommendations:
Take every vital safeguard, as unprotected skin and eyes may suffer burns rapidly. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Use liberally and reapply a broad-spectrum sunscreen with at least SPF 30 every two hours and right after outdoor activities or a swim. Stay cautious! Sand and water reflections increase UV radiation potency.