May weather forecast
Hoi An, Vietnam

May marks the start of the summer season in Hoi An. With temperatures reaching their peak at 32°C (89.6°F), the city embraces the hotter days. The rainfall also starts to show a significant rise to 56mm (2.2"), indicating the beginning of the rainy season. Visiting Hoi An during this period allows individuals to experience a blend of warm, sunny days which is an perfect setting for beach activities and outdoor exploration.

Temperature

The arrival of May records an average high-temperature of a still tropical 32°C (89.6°F), closely related to the 30°C (86°F) observed in April. Throughout May, Hoi An registers a consistent average low-temperature of 25°C (77°F).

Rainfall

In May, the rain falls for 14 days. Throughout May, 56mm (2.2") of precipitation is accumulated. In Hoi An, during the entire year, the rain falls for 144 days and collects up to 1929mm (75.94") of precipitation.

Daylight

In May, the average length of the day is 12h and 52min.
On the first day of the month, sunrise is at 05:22 and sunset at 18:05. On the last day of May, sunrise is at 05:14 and sunset at 18:14 +07.

Sunshine

The months with the most sunshine are January through May and December, with an average of 7h of sunshine.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index estimate of 11, and higher, represents an excessive health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: A maximum high daily UV index of 12 during May translates into the following directions:
Take all required precautions, as unprotected skin and eyes can burn in minutes. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. A broad-spectrum sunscreen of SPF 30+ should be used liberally and reapplied every two hours or post an outdoor workout or swim.