May weather forecast
El Salvador

May signals the onset of the rainy season in El Salvador, bringing about a significant increase in precipitation compared to the preceding dry months. However, despite the increase in rainfall, temperatures remain warm, ranging from 20°C (68°F) to 30°C (86°F). Coastal regions and areas with lower altitudes continue to register higher temperatures, while regions at higher altitudes, such as Santa Ana, experience slightly cooler conditions.

San Salvador, the nation's capital, records average temperatures of about 27°C (80.6°F), maintaining the warmth of the preceding month. Santa Ana, with its higher altitude, sees cooler averages around 25°C (77°F).

The most notable weather shift in May is the substantial increase in rainfall. This month marks the beginning of the rainy season, characterized by afternoon showers that can be quite heavy, although mornings often remain sunny and clear.

Compared to April, May sees a marked increase in rainfall, with precipitation levels continuing to increase as the month progresses. Despite the onset of the rainy season, the first half of the day typically remains suitable for outdoor activities and exploration. Visitors, however, should anticipate and prepare for the likely occurrence of afternoon showers.

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• San Salvador - May »
  The months with the lowest UV index in San Salvador are January, May, June, August through December, with an average maximum UV index of 6. The advent of May in San Salvador presents an average high-temperature of a still tropical 30.9°C (87.6°F), maintaining a close correlation with the preceding month.
• Santa Ana - May »
  The months with the highest UV index in Santa Ana, El Salvador, are January through August, October through December, with an average maximum UV index of 6. On the first day of May in Santa Ana sunrise is at 05:35 and sunset at 18:14.
• San Miguel - May »
  On the last day of the month, in San Miguel sunrise is at 05:24 and sunset at 18:16 CST. In San Miguel, during May, the rain falls for 16 days and regularly aggregates up to 192mm (7.56") of precipitation.
• Soyapango - May »
  In Soyapango in May, during 26.9 rainfall days, 267mm (10.51") of precipitation is typically accumulated. May marks the zenith of the rainy season in Soyapango, as rainfall reaches its peak at 267mm (10.51").
• Santa Tecla - May »
  On the first day of May in Santa Tecla, sunrise is at 05:35 and sunset at 18:13. When is the sunrise / sunset in May in Santa Tecla?
• Mejicanos - May »
  Increased relative humidity interferes with body cooling by slowing the rate of evaporation, resulting in a slower body cooling rate and a heightened feeling of heat. January, May, June, August through December, with an average maximum UV index of 6, are months with the lowest UV index in Mejicanos, El Salvador.
• Apopa - May »
  In Apopa, El Salvador, in May, during 26.9 rainfall days, 267mm (10.51") of precipitation is typically accumulated. On the first day of May in Apopa sunrise is at 05:34 and sunset at 18:12.
• Delgado - May »
  The weather during this month experiences a distinctive balance, making it an important month for Delgado's residents. 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.
• Ahuachapan - May »
  On the last day of the month, in Ahuachapan, sunrise is at 05:30 and sunset at 18:24 CST. In Ahuachapan, El Salvador, during May, the rain falls for 24.2 days and regularly aggregates up to 156mm (6.14") of precipitation.
• Ilopango - May »
  In Ilopango, in May, during 26.9 rainfall days, 267mm (10.51") of precipitation is typically accumulated. On the last day of the month, in Ilopango, sunrise is at 05:27 and sunset at 18:20 CST.
• San Marcos - May »
  On the last day of the month, in San Marcos, El Salvador, sunrise is at 05:28 and sunset at 18:20 CST. In May, the average heat index, which takes the relative humidity and factors it into the air temperature reading, is computed to be 42°C (107.6°F).