March weather forecast
Huatulco, Mexico

The first month of the spring, March, is still a hot month in Huatulco, Mexico, with temperature in the range of an average low of 20°C (68°F) and an average high of 34°C (93.2°F).
The ideal sea water temperature of 28°C (82.4°F) and 1mm (0.04") of accumulated rainfall makes March the best time for swimming and other water activities.

Temperature

Huatulco marks the onset of March with an average high-temperature of a still tropical 34°C (93.2°F), subtly divergent from February's 33°C (91.4°F). Significant variation from daytime temperatures marks March, with the month recording a nightly average of 20°C (68°F).

Rainfall

The months with the least rainfall in Huatulco, Mexico, are February through April and December with 1mm (0.04") of accumulated rain.

Sea temperature

In Huatulco, the average seawater temperature in March is 28°C (82.4°F).
Note: For any water activity, temperatures between 25°C (77°F) and 29°C (84.2°F) are deemed excellent and extremely satisfying for enduring periods.

Daylight

In March, the average length of the day in Huatulco, Mexico, is 12h and 4min.
On the first day of March in Huatulco, sunrise is at 6:42 am and sunset at 6:32 pm. On the last day of the month, sunrise is at 6:20 am and sunset at 6:37 pm CST.

Sunshine

The months with the most sunshine are February and March, with an average of 9h of sunshine.

UV index

The months with the highest UV index in Huatulco are March through September, with an average maximum UV index of 12. A UV Index estimate of 11, and higher, represents an extreme threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In March, a regular UV index of 12 translates into these guidelines:
Undertake all key precautions, as unprotected skin and eyes may get burns in no time. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Sunscreen with a sun protection factor of no less than 30 should be used liberally and reapplied frequently on overcast days, including after every swim or outdoor activity. Stay cautious! Sand and water reflections increase UV radiation potency.