May weather forecast
Acajutla, El Salvador

May is the maiden month of the wet season in Acajutla. The rainfall peaks dramatically to a hefty 125mm (4.92"), dispersed over an average of 25 days. The overall atmosphere is predominantly rainy and humid, providing a stark contrast to the dry start of the year. There is a marked decrease in sunshine hours, and the number of days with clear skies significantly drops. Winds are for most of the month rather calm, contributing to the serene surroundings.

Temperature

Acajutla in May witnesses an average high-temperature of a still tropical 30.4°C (86.7°F), indicating a slight variation from April's 30.6°C (87.1°F). Acajutla registers a gentle descent to an average nighttime low of 26.4°C (79.5°F) in May from its daytime highs.

Heat index

Throughout May, the heat index is evaluated at a very hot 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. Direct sunlight has the potential to heighten heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'feels like', takes into account both air temperature and humidity to illustrate what people actually feel. Elements such as metabolic variations, pregnancy, and physical exertion can influence one's weather perception. Direct sunlight exposure should be noted as it has the potential to increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Younglings frequently fail to recognize the requirement to rest and rehydrate. Thirst emerges late in dehydration - it is imperative to keep hydration levels high, particularly during extended physical exertions.
The natural cooling mechanism in humans involves perspiration, where the evaporation of sweat balances out excessive warmth. Increased relative humidity slows down evaporation, thereby decreasing the rate of heat removal from the body, culminating in a sensation of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in May is 73%.

Rainfall

In Acajutla, in May, it is raining for 25.3 days, with typically 125mm (4.92") of accumulated precipitation. Throughout the year, in Acajutla, there are 183.3 rainfall days, and 831mm (32.72") of precipitation is accumulated.

Sea temperature

In Acajutla, the average seawater temperature in May is 30°C (86°F).
Note: Swimming in waters heated beyond 30°C (86°F) can arguably feel less refreshing.

Daylight

In Acajutla, the average length of the day in May is 12h and 46min.
On the first day of May, sunrise is at 05:37 and sunset at 18:15. On the last day of the month, sunrise is at 05:30 and sunset at 18:23 CST.

Sunshine

In Acajutla, El Salvador, the average sunshine in May is 11h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index. The months with the lowest UV index in Acajutla, El Salvador, are January through December, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.
Note: In May, a regular UV index of 7 translates into these guidelines:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. During bright days, sunglasses that offer UVA and UVB defense are recommended. Attention! UV radiation is ramped up when reflecting off sand and water surfaces.