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 commencement of May brings an average high-temperature of a still tropical 32°C (89.6°F), marking an inconsequential divergence from April. In the month of May, Hoi An records a consistent average low-temperature of 25°C (77°F).

Rainfall

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

Daylight

The average length of the day in May in Hoi An, Vietnam, 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, in Hoi An, sunrise is at 05:14 and sunset at 18:14 +07.

Sunshine

January through May and December, with an average of 7h of sunshine, are months with the most sunshine in Hoi An, Vietnam.

UV index

The months with the highest UV index in Hoi An are March through September, with an average maximum UV index of 12. A UV Index value of 11, and more, symbolizes an excessive health risk from exposure to the Sun's UV rays for the average person.
Note: The UV index of 12 during May leads to these advisories:
Ensure all key precautions. Defense against sun exposure is critical. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Apply liberally and reapply a broad-spectrum sunscreen of SPF 30+ every two hours, and promptly after any outdoor workout or a swim.