September weather forecast
La Paz, Bolivia

September witnesses a rise in rainfall to 36mm (1.42"), commencing the transition to the wet season. As the first month of spring, it also brings subtle increases in the city's temperatures. Daylight hours extend, while steady sunshine hours keep the city effulgent, reflecting the fresh spring blooms. Despite more rainfall, humidity remains balanced, not too high, not too low. With Spring's arrival, La Paz weather showcases a blend of sunshine, warmth, and light showers, a perfect harmony for the city's flora to thrive.

Temperature

Stepping into September, La Paz records an average high-temperature of a still moderate 15.3°C (59.5°F), almost consistent with August. The temperature notes a substantial fall from the daily peak to an average of -1°C (30.2°F) during September nights.

Humidity

In September, the average relative humidity is 48%.

Rainfall

In La Paz, in September, it is raining for 8.2 days, with typically 36mm (1.42") of accumulated precipitation. In La Paz, during the entire year, the rain falls for 120.4 days and collects up to 603mm (23.74") of precipitation.

Daylight

In September, the average length of the day in La Paz is 12h and 1min.
On the first day of September, sunrise is at 06:38 and sunset at 18:26. On the last day of the month, sunrise is at 06:14 and sunset at 18:29 -04.

Sunshine

The average sunshine in September is 6.3h.

UV index

The months with the highest UV index are January through April, August through December, with an average maximum UV index of 12. A UV Index reading of 11, and higher, represents an excessive health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 12 during September translates into the following guidance:
Undertake all critical precautions. Protection from sun harm is vital. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.