Weather in Lima in September 2025
Average weather
Average temperature in Lima in September
The temperature in September is +18°C on average, with a range between a maximum of +20°C during the day and a minimum of +16°C at night.
The average maximum temperature goes down 50% by the end of the month, compared with the beginning of the month, from +20°C to +18°C.
Is Lima warm or cold in September?
Lima is typically mild in September.
Maximum temperatures go up compared to the previous month from +17°C to +17°C. The minimum temperature also goes up from +15°C to +15°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
September is one of the coolest months in Lima, here is the comparison with other months:
Water temperature in Lima in September
Water in Lima in September is Cold. It varies from +15°C to +17°C, with an average of +16°C. This is almost similar to the air temperature, which averages +17°C.
The water temperature in September is one of the coldest of the entire year:
Can you swim in Lima in September?
Climate in Lima in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +17°C | +17°C | +17°C | ||||
| Min. temperature | ||||||
| +13°C | +13°C | +13°C | ||||
| Max. temperature | ||||||
| +22°C | +22°C | +21°C | ||||
| Rainfall | ||||||
| 0 mm | 1 mm | 1 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +16°C | +16°C | +17°C | ||||
| Humidity | ||||||
| 83% | 83% | 83% | ||||
| Air pressure | ||||||
| 1014 HPa | 1013 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 0 | 0 | 0 | ||||
| Cloudy days | ||||||
| 30 | 29 | 29 | ||||
| Rainy days | ||||||
| 1 | 1 | 2 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. The temperature levels stay the same in the area of +17°C for average maximum temperature during the day. Prepare for more rain. Average rainfall goes from 0 mm to 1 mm. Humidity levels don’t change as the month goes on, averaging around 83%. The average wind speed doesn’t change much during September, staying around 3 m/s. The amount of sunny days stay about the same, averaging 0 sunny days during the month.
October brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 6 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Lima is gradually decreasing during September, going from 4 m/s to 3 m/s over the course of the month.
Rain
How was the weather last September in Lima?
Climate Change over Years
The climate in Lima in September has not changed much over the last 43 years.
The average temperature was the lowest in 2007 (+18°C) and the highest in 1997 (+22°C). The driest year was 1992 with only 2 mm of rainfall, and the wettest year was 2023 with 69 mm.
FAQ
Is September a good time to visit Lima?
Can you sunbathe in Lima in September?
Can you swim in Lima in September?
Is Lima rainy in September?
Is it sunny in Lima in September?
Monthly weather in Lima
Source of the data
For this page, we’ve looked at the typical weather in Lima, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.