March weather forecast
Fortaleza, Brazil

As Fortaleza transitions into March, the city experiences a noteworthy increase in rainfall, peaking to a significant 323mm (12.72"). The temperature continues to hover around the 30-degree mark with a slight dip from the previous months. Fortaleza in March is notable for its higher relative humidity of 84.7%, contributing to the warm and humid weather that the city is known for. The UV index remains a constant 12, suggesting sun protection as an ongoing necessity. With longer daylight hours, March offers an ideal chance to unveil Fortaleza under sprightly showers.

Temperature

At the start of March, Fortaleza's average high-temperature reaches a moderately hot 29.7°C (85.5°F), subtly different from the preceding month. During the March nights, an average temperature of 23.6°C (74.5°F) is observed in Fortaleza.

Heat index

The heat index value for March is estimated at a very hot 38°C (100.4°F). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
When assessing, remember that heat index measurements are for light winds and shaded spots. In the presence of direct sunshine, the heat index could be augmented by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', reflects the blend of air temperature and relative humidity to give a temperature impression. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. The sun, when shining directly, can have a significant impact on the perceived temperature, increasing the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. Children frequently underestimate the necessity to rest and hydrate. Thirst is a late sign of dehydration - thus, it is vital to stay hydrated, particularly during lengthy physical exercises.
Humans rely on perspiration as a cooling mechanism, wherein the evaporating sweat counteracts excessive warmth. Under conditions of high temperature and humidity (enhanced heat index), sweat production is compromised, exacerbating the sensation of warmth. When body temperature rises due to excess heat gain beyond its removal capability, one might experience heat-related disorders.

Humidity

The average relative humidity in March is 84.7%.

Rainfall

In March, in Fortaleza, Brazil, the rain falls for 22 days. Throughout March, 323mm (12.72") of precipitation is accumulated. In Fortaleza, during the entire year, the rain falls for 135 days and collects up to 1608mm (63.31") of precipitation.

Sea temperature

In Fortaleza, Brazil, in March, the average water temperature is 28.8°C (83.8°F).
Note: Water surface temperatures from 25°C (77°F) to 29°C (84.2°F) are considered optimal and extremely delightful for long-lasting pleasure in any water activity.

Daylight

In Fortaleza, the average length of the day in March is 12h and 8min.
On the first day of the month, sunrise is at 05:40 and sunset at 17:51. On the last day of March, sunrise is at 05:35 and sunset at 17:40 -03.

Sunshine

With an average of 4.8h of sunshine, March has the least sunshine of the year.

UV index

The months with the highest UV index are January through April, September through December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 12 in March translates into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 minutes. Make an effort to avoid direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation, and note that objects like parasols or canopies might not offer full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Even on overcast days, apply and frequently reapply a sunscreen with SPF 30 or more, specifically after a swim or outdoor workout. Notice! The reflection of water and sand increases the UV radiation significantly.