May weather forecast
Bãi Cháy, Vietnam

The last month of the spring, May, is also a moderately hot month in Bãi Cháy, Vietnam, with an average temperature fluctuating between 24.5°C (76.1°F) and 29.8°C (85.6°F).

Temperature

Bãi Cháy's weather shows a minor temperature rise with the arrival of May, moving from 26.2°C (79.2°F) in April to a still moderately hot 29.8°C (85.6°F). Nighttime temperatures consistently average a still moderately hot 24.5°C (76.1°F) during May.

Heat index

In May, the heat index is estimated at a fiery hot 38°C (100.4°F). Apply extra caution, heat cramps and heat exhaustion could happen. Heatstroke might occur with long-duration activity.
Heat index determinations are made taking into account the shade and light air movements. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'feels like', is derived by integrating air temperature with the existing relative humidity to express the perceived warmth. The effect is personal, with varied weather perceptions among individuals due to differences in body mass, stature, and physical activity. Being aware that direct sunlight can impact the felt heat might mean an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly important for children. In general, younger individuals are at greater risk than adults because they tend to sweat less. Also, having a larger skin surface to body size ratio and greater heat production due to their active behavior contribute to this danger.
When the body gets too warm, it perspires, leading to sweat evaporation which cools it down. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. As body temperatures escalate without effective heat release, one might face dehydration threats.

Humidity

In May, the average relative humidity is 82%.

Rainfall

In Bãi Cháy, Vietnam, during May, the rain falls for 21.6 days and regularly aggregates up to 133mm (5.24") of precipitation. Throughout the year, there are 214.5 rainfall days, and 1208mm (47.56") of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 8min.
On the first day of May, sunrise is at 05:21 and sunset at 18:16. On the last day of the month, sunrise is at 05:09 and sunset at 18:29 +07.

Sunshine

In Bãi Cháy, the average sunshine in May is 9.4h.

UV index

The months with the highest UV index are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high threat to health from unsafe exposure to UV radiation for average individuals.
Note: A daily maximum UV index of 7 in May translates into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.