May weather forecast
Thailand

May acts as a transitional month in Thailand, bridging the gap between the intense summer and the onset of the monsoon season. As May progresses, there's an evident shift in weather dynamics with temperatures slightly receding, coupled with an increase in humidity and rain showers.

Northern Thailand, near the borders with Myanmar and Laos, starts experiencing more cloud cover and occasional rain showers. While the temperatures remain warm, ranging from 30°C (86°F) to 34°C (93.2°F), the influx of moisture lends a slight relief to the parched regions.

Bangkok and its neighboring areas, having endured the summer's peak, now welcome sporadic rain showers. These pre-monsoon showers, although intermittent, offer brief respites from the oppressive heat. Average temperatures hover around 32°C (89.6°F) to 35°C (95°F), but the increased humidity can make the environment feel warmer than the actual readings suggest.

As May advances, the frequency and intensity of rain showers grow. By the latter half of the month, the southwest monsoon begins making its presence felt, especially in the western and southern regions of the country. The rain showers, though still not at their peak, set the stage for the rainy season that is poised to unfold in the coming months.

Comparatively, May stands as a month of change. The oppressive heat of April gradually yields to increasing cloud cover and showers. While it doesn't bear the full brunt of the monsoon yet, May's weather patterns hint at the wetter months that lie ahead for Thailand.

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• Bangkok - May »
  On the last day of the month, in Bangkok sunrise is at 05:49 and sunset at 18:42 +07. The month with the warmest seawater in Bangkok is May, with an average sea temperature of 29.9°C (85.8°F).
• Chiang Mai - May »
  A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. The heat index, also known as 'apparent temperature' or 'felt air temperature', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity.
• Pattaya - May »
  With an average sea temperature of 30°C (86°F), May is the month with the warmest seawater in Pattaya. In Pattaya in May, during 12 rainfall days, 148mm (5.83") of precipitation is typically accumulated.
• Phuket - May »
  The months with the warmest seawater in Phuket are April through June, with an average sea temperature of 30°C (86°F). On the last day of the month, in Phuket sunrise is at 06:07 and sunset at 18:41 +07.
• Nakhon Ratchasima - May »
  In Nakhon Ratchasima during May, the rain falls for 15 days and regularly aggregates up to 154mm (6.06") of precipitation. In Nakhon Ratchasima in May, it is raining for 15 days, with typically 154mm (6.06") of accumulated precipitation.
• Udon Thani - May »
  Moving into May, Udon Thani witnesses a slight dip in temperature, accompanied by a drastic surge in humidity to 74%. In Udon Thani, during the entire year, the rain falls for 118 days and collects up to 1241mm (48.86") of precipitation.
• Hua Hin - May »
  In May, the average heat index, which represents the influence of relative humidity on air temperature, is computed to be 47°C (116.6°F). The heat index, also known as 'feels like' or 'felt air temperature', reflects the blend of air temperature and relative humidity to give a temperature impression.
• Krabi - May »
  April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Krabi. April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Krabi.
• Hat Yai - May »
  The heat index, also known as 'apparent temperature' or 'felt air temperature', binds temperature metrics with humidity values to give a sense of the actual warmth. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit degrees.
• Surat Thani - May »
  April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Surat Thani, Thailand. April through June, with an average sea temperature of 30°C (86°F), are months with the warmest seawater in Surat Thani.
• Chiang Rai - May »
  In Chiang Rai, during the entire year, the rain falls for 137 days and collects up to 1691mm (66.57") of precipitation. On the first day of May in Chiang Rai, sunrise is at 05:51 and sunset at 18:44.
• Khon Kaen - May »
  On the last day of the month, in Khon Kaen, sunrise is at 05:35 and sunset at 18:37 +07. The average high-temperature in Khon Kaen for May is a hot 34.5°C (94.1°F), closely aligning with the temperature of the preceding month.