May weather forecast
Hai Phong, Vietnam

In May, Hai Phong is in the throes of summer. It's one of the hottest months, with temperatures commonly reaching their highest levels. The majority of the days bring about intensive sunlight and high UV rates. In addition to high temperatures, May also experiences increased rainfall, which does little to alleviate the overall heat. The highest observed temperature reaches up to 30.5°C (86.9°F). While the weather is quite hot, the exquisite beauty of Hai Phong during the summer months remains undeniable.

Temperature

May's onset in Hai Phong, Vietnam, 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.

Heat index

During May, the heat index is evaluated at a scorching 42°C (107.6°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
Consider that heat index readings are for situations in the shade and light wind. Exposure to direct sunlight may make the heat index values climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. Elements of metabolic variation, physical activity, and clothing contribute to the effect of temperature on an individual. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones often do not realize the necessity to rest and replenish their fluids. Thirst is a delayed indication of dehydration - keeping hydrated, particularly in prolonged physical activity, is crucial.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. With excessive moisture in the atmosphere, the effectiveness of the evaporation process is decreased, causing the body to cool down less efficiently, leading to a sensation of overheating. When heat surpasses the body's release mechanisms, dehydration and overheating risks become pronounced.

Humidity

The average relative humidity in May in Hai Phong is 87%.

Rainfall

In May, in Hai Phong, Vietnam, the rain falls for 9.6 days. Throughout May, 241mm (9.49") of precipitation is accumulated. Throughout the year, there are 104.3 rainfall days, and 2209mm (86.97") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature in Hai Phong is 27.3°C (81.1°F).
Note: For swimming, diving, or other water activities, the temperature range of 25°C (77°F) to 29°C (84.2°F) is perceived as exceptionally enjoyable and comfortable even for prolonged periods.

Daylight

In May, the average length of the day is 13h and 8min.
On the first day of May, sunrise is at 05:22 and sunset at 18:17. On the last day of the month, sunrise is at 05:11 and sunset at 18:30 +07.

Sunshine

In May, the average sunshine is 6.4h.

UV index

The months with the highest UV index in Hai Phong are March through August, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 12 during May leads to these advisories:
Practice every essential safety step. People with fair skin could receive burns in fewer than 5 minutes. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Regardless of the cloudiness of the day, a sunscreen with SPF 30 or more should be applied and reapplied generously, specifically after swimming or outdoor exercise. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.