May weather forecast
Nan, Thailand

May in Nan sees a notable shift as the first true signs of the rainy season begin to emerge. Clouds drape the sky more frequently, a welcome relief from the unyielding April sun. The city's atmosphere takes on a distinct smell of earth, indicative of the incoming rains. The unique characteristic of weather in May is that rainfall jumps sharply from April, with a substantial 177mm (6.97") measured. This month marks the start of a serene period where the rhythm of rainfall and sunshine dictate the pace of life.

Temperature

In May, the average high-temperature in Nan registers at a still torrid 35°C (95°F), nearly identical to April's 37°C (98.6°F). Throughout the May nights, Nan encounters a low-temperature of 23.5°C (74.3°F).

Heat index

In May, the average heat index is estimated at a burning hot 54°C (129.2°F). Stay on guard: Heat exhaustion and heat cramps are predicted. Ongoing effort can cause heatstroke.
Heat index readings emphasize conditions of light breezes and shaded spots. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The individual's temperature perception can be influenced by numerous factors such as metabolic variations, physical activity, and clothing. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are of high significance for children. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
Perspiring is the body's way of cooling down, particularly by allowing sweat to evaporate and take the heat with it. With an abundance of moisture present in the air, the process of evaporation becomes less effective, and the body fails to cool down as it should, leading to the sensation of overheating. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in May is 76%.

Rainfall

In Nan, in May, during 17 rainfall days, 177mm (6.97") of precipitation is typically accumulated. Throughout the year, there are 124 rainfall days, and 1234mm (48.58") of precipitation is accumulated.

Daylight

In May, the average length of the day is 13h and 1min.
On the first day of May in Nan, sunrise is at 05:49 and sunset at 18:38. On the last day of the month, sunrise is at 05:39 and sunset at 18:50 +07.

Sunshine

In Nan, the average sunshine in May is 7h.

UV index

March through September, with an average maximum UV index of 12, are months with the highest UV index. A UV Index of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum high UV index of 12 in May translates into the following recommendations:
Adopt all essential precautions. Preventing sun harm is crucial. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Apply and frequently reapply a broad-spectrum SPF 30+ sunscreen after every two hours, or immediately after a swim or outdoor exercise.