January weather forecast
San Juan del Sur, Nicaragua

The start of the year sees a comfortable climate in San Juan del Sur, with reasonably warm temperatures and a relatively low amount of rainfall. There are slight temperature swings, with the mercury dancing between 24.3°C (75.7°F) and 29.1°C (84.4°F). The wind speed persistently stands at around 26.6km/h (16.5mph), contributing to fair skies and moderate humidity levels. This makes the weather quite accommodating for outdoor adventures and beach activities. Sightings of the sun are frequent, bringing much delight to sun-seekers.

Temperature

The beginning of January reveals an average high-temperature of a still moderately hot 29.1°C (84.4°F), showing minimal deviation from the previous month. Night temperatures during January in San Juan del Sur experience a slight downturn, averaging a still warm 24.3°C (75.7°F).

Heat index

For January, the heat index is evaluated at a tropical 33°C (91.4°F). Extra precautions are necessary, heat cramps and heat exhaustion are plausible outcomes. Extended activity could lead to heatstroke.
Be aware that heat index ratings are designed for shaded locations and minor breezes. A rise in the heat index by 15 Fahrenheit (8 Celsius) degrees may result from direct sunlight exposure.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', evaluates the perceived heat by adding the effect of moisture in the air. An individual's perception of weather can be swayed by a variety of elements including metabolic differences, pregnancy status, and their level of physical exertion. It is noteworthy that being in direct sunlight can enhance the weather's impact, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values hold great significance to 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.

Humidity

The average relative humidity in January in San Juan del Sur is 72%.

Rainfall

In San Juan del Sur, during January, the rain falls for 16 days and regularly aggregates up to 14mm (0.55") of precipitation. In San Juan del Sur, during the entire year, the rain falls for 237.9 days and collects up to 717mm (28.23") of precipitation.

Sea temperature

In January, the average sea temperature in San Juan del Sur is 26.9°C (80.4°F).
Note: Water temperatures between 25°C (77°F) and 29°C (84.2°F) are ideal for swimming, diving, and other activities, ensuring comfort and enjoyment for lengthened periods.

Daylight

In San Juan del Sur, the average length of the day in January is 11h and 33min.
On the first day of January in San Juan del Sur, sunrise is at 06:02 and sunset at 17:31. On the last day of the month, sunrise is at 06:07 and sunset at 17:46 CST.

Sunshine

January has the least sunshine of the year in San Juan del Sur, with an average of 6.9h of sunshine.

UV index

The months with the highest UV index are January through December, with an average maximum UV index of 7. The months with the lowest UV index are January through December, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: In January, a daily UV index of 7 turns into the following recommendations:
Avoid excessive sunlight. Those with lighter skin may experience burning in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of sand and water significantly amplifies the Sun's UV radiation.