September weather forecast
Japi, Brazil

The first month of the spring, September, is also a moderately hot month in Japi, Brazil, with temperature in the range of an average high of 29.5°C (85.1°F) and an average low of 19.8°C (67.6°F).

Temperature

With the start of September, Japi measures an average high-temperature of a still moderately hot 29.5°C (85.1°F), not significantly differing from August's 28.5°C (83.3°F). Japi, in September, witnesses an average low-temperature of 19.8°C (67.6°F).

Heat index

In September, the average heat index is appraised at a sweltering 36°C (96.8°F). Adopt special protective actions against heat exhaustion and heat cramps. Long-duration activity risks heatstroke.
It is crucial to understand that heat index figures are for shade and gentle wind conditions. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', represents the fusion of temperature and moisture in the air to suggest how warm it feels. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are essentially critical for children. Kids often lack the knowledge about the necessity to take breaks and consume liquids. Thirst, as a late symptom of dehydration, necessitates the maintenance of hydration, particularly during enduring physical activities.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. In situations of high air temperature combined with high humidity (significant heat index), the body's ability to perspire is reduced, heightening the sense of warmth. When body temperature rises due to an imbalance in heat gain, there's a potential for dehydration and overheating.

Humidity

In Japi, the average relative humidity in September is 78%.

Rainfall

In September, the rain falls for 15.2 days. Throughout September, 14mm (0.55") of precipitation is accumulated. Throughout the year, in Japi, there are 205.7 rainfall days, and 444mm (17.48") of precipitation is accumulated.

Daylight

In Japi, the average length of the day in September is 12h and 4min.
On the first day of the month, sunrise is at 05:23 and sunset at 17:23. On the last day of September, in Japi, sunrise is at 05:08 and sunset at 17:18 -03.

Sunshine

In September, the average sunshine is 6.3h.

UV index

March through September, November and December, with an average maximum UV index of 6, are months with the lowest UV index. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for average individuals.
Note: The maximum UV index of 6 during September translates into these guidelines:
Undertake precautions and comply with sun safety standards. Protection from skin and eye injury is vital. The Sun's UV radiation is most potent between the hours of 10 a.m. and 4 p.m. Try to avoid direct sunlight during this time. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.