March weather forecast
Nuku'alofa, Tonga

March weather appears to retain the general climate of February, without any drastic weather transformations. Notable is the scarce reduction of monthly average temperature with a peak of 29.6°C (85.3°F) from the preceding peak of 29.9°C (85.8°F) in February. The diminishing rainfall and slightly shorter daylight token the inception of the transition towards the less humid months. Sea temperatures remain more or less constant. The UV index stays at its peak, necessitating continued use of sun protection.

Temperature

Nuku'alofa ushers in March with an average high-temperature of a still moderately hot 29.6°C (85.3°F), showing a close resemblance to the previous month. Nuku'alofa's average low-temperature in the month of March is recorded at a still warm 23.6°C (74.5°F).

Heat index

For most parts of March, the heat index is appraised at a torrid 36°C (96.8°F). Implement heightened safety measures - risk of heat exhaustion and heat cramps is increased. Prolonged activity may result in heatstroke.
In the scope of the heat index, its values resonate with shade and light wind conditions. Under direct sunshine, the heat index values might be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a calculated temperature value of how hot it feels when the moisture in the air is factored in. The experience of temperature can be subjective, varying based on the individual's activity and heat perception, influenced by factors like wind, attire, and metabolic variations. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular significance for children. Children often overlook the need for breaks and fluid intake. Thirst is a late-stage sign of dehydration - hence, it is necessary to stay hydrated, especially during extended periods of physical activities.
To combat high temperatures, the human body perspires and relies on sweat evaporation for cooling. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The most humid month is March, with an average relative humidity of 79%.

Rainfall

In Nuku'alofa, in March, it is raining for 19 days, with typically 206mm (8.11") of accumulated precipitation. In Nuku'alofa, during the entire year, the rain falls for 180 days and collects up to 1721mm (67.76") of precipitation.

Sea temperature

With an average sea temperature of 28.1°C (82.6°F), March is the month with the warmest seawater.
Note: For swimming, diving, and similar activities, the water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered delightful, allowing for extended periods of enjoyment without discomfort.

Daylight

In Nuku'alofa, the average length of the day in March is 12h and 12min.
On the first day of the month, sunrise is at 06:38 and sunset at 19:07. On the last day of March, sunrise is at 06:48 and sunset at 18:41 +13.

Sunshine

January and March, with an average of 18h of sunshine, are months with the most sunshine.

UV index

January through March, November and December, with an average maximum UV index of 12, are months with the highest UV index. A UV Index reading of 11, and higher, represents an extreme threat to health from exposure to the Sun's UV rays for the average person.
Note: A daily high UV index of 12 in March leads to these guidelines:
Execute all vital precautions. Preventing sun damage is of utmost importance. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. To cut down UV radiation exposure by about half, sport a wide-brim hat. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Note! Reflective surfaces like sand and water heighten the UV radiation levels.