May weather forecast
San Juan del Sur, Nicaragua

May marks a noticeable shift in San Juan del Sur weather as it ushers in the region's rainy season. Significantly, rainfall escalates to 93mm (3.66"), accompanied by a rise in cloud cover. Regardless, the temperature continues to remain steady and warm, with only minor fluctuations. Despite the increase in cloudiness, reasonable daylight hours still prevail, offering ample opportunities for sightseeing. Nature lovers might find this month appealing as the increased moisture brings lush greenery to life.

Temperature

The average high-temperature in May in San Juan del Sur, at a still tropical 31.3°C (88.3°F), reveals a modest deviation from April's 31.8°C (89.2°F). San Juan del Sur maintains an average low-temperature of 26.3°C (79.3°F) throughout May's nights.

Heat index

May's heat index is evaluated at a torrid 39°C (102.2°F). Implement additional preventive actions, heat cramps and heat exhaustion are potential hazards. Heatstroke could follow prolonged activity.
Heat index guidelines indicate values are for light wind scenarios and shaded regions. Direct sunlight might lead to a heat index increase by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'real feel', is a composite of temperature and humidity figures to convey how warm it feels. One's weather perception can be influenced by a range of factors including metabolic differences, being pregnant, and their level of physical activity. Exposure to direct sun rays can influence the heat you feel, pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones are generally more prone to risk than adults due to their reduced ability to sweat. Their large skin surface area relative to their diminutive bodies and elevated heat production from their activities further enhance this risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. With high air temperature and humidity (high heat index) conditions, sweat production is restricted, leading to an amplified perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In San Juan del Sur, the average relative humidity in May is 73%.

Rainfall

In San Juan del Sur, Nicaragua, in May, it is raining for 20.7 days, with typically 93mm (3.66") of accumulated precipitation. Throughout the year, there are 237.9 rainfall days, and 717mm (28.23") of precipitation is accumulated.

Sea temperature

In May, the average sea temperature is 29°C (84.2°F).
Note: Ideal surface water temperatures for any water activity fall between 25°C (77°F) and 29°C (84.2°F), offering maximum enjoyment for lengthened periods.

Daylight

In San Juan del Sur, the average length of the day in May is 12h and 39min.
On the first day of the month, sunrise is at 05:24 and sunset at 17:56. On the last day of May, sunrise is at 05:19 and sunset at 18:03 CST.

Sunshine

In May, the average sunshine in San Juan del Sur is 8.8h.

UV index

January through December, with an average maximum UV index of 7, are months with the highest UV index in San Juan del Sur. January through December, with an average maximum UV index of 7, are months with the lowest UV index. A UV Index value of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In May, the UV index of 7 transforms into the following advice:
Resist extreme sun exposure. Guarding against solar damage is essential. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be on guard! The reflective nature of sand and water boosts UV exposure.