May weather forecast
Cẩm Phả, Vietnam

May is the beginning of the hot season in Cẩm Phả, marked by high temperatures and increased rainfall. The temperatures oscillate between 25.3°C (77.5°F) and 28.3°C (82.9°F) and see a substantial increase in rainfall to a whopping 131mm (5.16"). This month also experiences the longest daylight hours of 13.1 hours, giving ample time for day trips and exploring. With an increase in humidity and rainfall, residents and tourists are advised to stay hydrated. Despite the heat and humidity, the city's vibrant character and charm remain undeterred.

Temperature

With the onset of May, Cẩm Phả experiences a subtle temperature shift, with the average high-temperature moving from 24.5°C (76.1°F) in April to a still moderately hot 28.3°C (82.9°F). Recording a slight drop from the daily maximum, Cẩm Phả notes an average low temperature of 25.3°C (77.5°F) in the month of May.

Heat index

May's average heat index is computed to be a hot 34°C (93.2°F). Greater safety measures are needed, risk of heat exhaustion and heat cramps is high. Continuous activity might trigger heatstroke.
Heat index evaluations are typically in the context of light winds and shaded environments. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'apparent temperature', unifies temperature and humidity readings to offer a comprehensive feel of warmth. The effect of weather is individual, with a variety of people experiencing it differently due to distinctions in body mass, height, and level of activity. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Youngsters often neglect the necessity for rest and hydration. Thirst is a sign of advancing dehydration - thus the importance of maintaining hydration, specifically during long-lasting physical activities.

Humidity

The average relative humidity in May is 84%.

Rainfall

In Cẩm Phả, in May, it is raining for 20.6 days, with typically 131mm (5.16") of accumulated precipitation. Throughout the year, there are 209.3 rainfall days, and 1269mm (49.96") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 27.3°C (81.1°F).
Note: For activities such as swimming and diving, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as particularly pleasant and satisfying for prolonged periods without feeling uneasy.

Daylight

In Cẩm Phả, the average length of the day in May is 13h and 8min.
On the first day of the month, sunrise is at 05:19 and sunset at 18:15. On the last day of May, sunrise is at 05:08 and sunset at 18:28 +07.

Sunshine

The average sunshine in May is 9.5h.

UV index

May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for the average person.
Note: The maximum UV index of 7 during May leads to these instructions:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit direct sun exposure especially between 10 a.m. and 4 p.m., when UV radiation is at its peak. However, keep in mind that shade structures may not provide full sun protection. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Attention! UV radiation is markedly stronger with water and sand reflections.