May weather forecast
Vietnam

May brings about a climatic shift across Vietnam. The North begins to transition into summer, the Central regions grapple with increased rainfall, while the South steps into the heart of the rainy season.

In the North, cities like Hanoi and Hai Phong experience the onset of summer in May. Temperatures rise noticeably from the previous month, with averages falling between 25°C (77°F) to 35°C (95°F), making it one of the hottest months in Northern Vietnam. Accompanying the heat, rainfall also increases, contributing to the region's high humidity levels.

Central Vietnam, including cities such as Hue and Hoi An, sees a similar rise in temperature, with ranges from 25°C (77°F) to 35°C (95°F). However, the defining factor of May in this region is the significant increase in rainfall. May typically marks the transition into the Central region's rainy season, resulting in more frequent and heavier showers compared to April.

In Southern Vietnam, including Ho Chi Minh City and Can Tho, May is characterized by the full onset of the wet season. The high temperatures remain consistent, ranging from 25°C (77°F) to 35°C (95°F), as in the previous months. However, there is a marked increase in rainfall compared to April, with frequent, heavy showers becoming a common occurrence.

From April to May, Vietnam witnesses substantial weather changes. While the North and Central regions grapple with rising temperatures, the South is swept by the rains of the monsoon season.

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• Hanoi - May »
  On the last day of the month, in Hanoi sunrise is at 05:14 and sunset at 18:34 +07. On the first day of May in Hanoi sunrise is at 05:25 and sunset at 18:21.
• Ho Chi Minh City - May »
  January through December, with an average maximum UV index of 7, are months with the lowest UV index in Ho Chi Minh City. In Ho Chi Minh City, Vietnam, in May, it is raining for 27.8 days, with typically 139mm (5.47") of accumulated precipitation.
• Da Nang - May »
  The months with the highest UV index in Da Nang, Vietnam, are April through September, with an average maximum UV index of 7. On the first day of May in Da Nang sunrise is at 05:22 and sunset at 18:05.
• Hai Phong - May »
  May's onset in Hai Phong brings a subtle temperature rise, moving from a moderately hot 26.2°C (79.2°F) in April to a hot 30.5°C (86.9°F). An average nighttime temperature of 24°C (75.2°F) is noted in Hai Phong during the month of May.
• Can Tho - May »
  In May, the average heat index, which takes the relative humidity and factors it into the air temperature reading, is appraised at 48°C (118.4°F). Greater relative humidity lessens the rate of evaporation, thus decreasing the body's heat dispersal, which gives rise to a sensation of overheating.
• Huế - May »
  May, often regarded as the gateway to summer in Huế, witnesses an acceleration of temperature profiles along with a radical drop in rainfall. In Huế the average seawater temperature in May is 27.8°C (82°F).
• Vinh - May »
  With this month, Vinh starts witnessing persistent summer winds that provide relief from the soaring temperatures. The months with the highest UV index in Vinh are April through September, with an average maximum UV index of 7.
• Phan Thiet - May »
  February through October, with an average maximum UV index of 12, are months with the highest UV index in Phan Thiet, Vietnam. May in Phan Thiet, Vietnam is recognizably different from the preceding months, marking the arrival of the rainy season.
• Vũng Tàu - May »
  On the first day of May in Vũng Tàu sunrise is at 05:33 and sunset at 18:03. In Vũng Tàu, Vietnam, in May, it is raining for 15 days, with typically 174mm (6.85") of accumulated precipitation.
• Thai Nguyen - May »
  On the first day of May in Thai Nguyen, Vietnam, sunrise is at 05:25 and sunset at 18:22. In Thai Nguyen, in May, during 23.7 rainfall days, 136mm (5.35") of precipitation is typically accumulated.