May weather forecast
Cao Bang, Vietnam

The onset of summer is strongly felt in May at Cao Bang, with weather conditions drastically differing from the relatively cooler and drier April. As the month progresses, noticeable increase in temperature, especially in the daytime, marks the prevalence of the warmer weather. Residents and tourists should expect significant increase in rainfall, providing relief from the heat but also indicating the beginning of the city's wettest season. This, coupled with a relative humidity of 81%, adds a touch of moisture to the air. May thus experiences a climate that is a blend of soaring temperatures and refreshing showers.

Temperature

In the transition from April to May, Cao Bang reports an average high-temperature of a still warm 29.4°C (84.9°F), indicating a close resemblance to the prior month. The average temperature during May nights is registered at an agreeable 20.3°C (68.5°F).

Heat index

For May, the heat index is calculated to be a sweltering 36°C (96.8°F). Implement enhanced safety actions, heat cramps and heat exhaustion could occur. Sustained activity might result in heatstroke.
Factoring in the heat index, values are geared towards shaded areas with light breezes. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative humidity. The effect is experienced differently by individuals, hinging on unique characteristics such as body mass, stature, and level of activity. Always consider that direct sunlight exposure might heighten the heat's effects, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often ignore the need to take a break and drink fluids. Thirst is a late-stage symptom of dehydration - hence, maintaining hydration, particularly during extended physical activities, is crucial.
Evaporating sweat is a key way the human body dispels excessive warmth, all thanks to the process of perspiration. An increase in relative humidity retards evaporation, subsequently reducing the body's heat removal rate and leading to a sensation of being overly warm. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

In Cao Bang, the average relative humidity in May is 81%.

Rainfall

In Cao Bang, in May, during 23.4 rainfall days, 118mm (4.65") of precipitation is typically accumulated. Throughout the year, there are 233.9 rainfall days, and 1056mm (41.57") of precipitation is accumulated.

Snowfall

February through December are months without snowfall.

Daylight

The average length of the day in May is 13h and 14min.
On the first day of May, sunrise is at 05:22 and sunset at 18:21. On the last day of the month, sunrise is at 05:09 and sunset at 18:35 +07.

Sunshine

The average sunshine in May is 7.9h.

UV index

The months with the highest UV index are April through September, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 during May translates into the following guidance:
Resist overexposure. Safeguarding from solar damage is indispensable. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.