September weather forecastLa Serena, Chile
September
Weather in September
Amid September, the Chilean city of La Serena embraces the spring season's arrival with moderate rise in weather conditions. Ranging between 13.6°C (56.5°F) to 18.6°C (65.5°F), the temperatures mark this transitional phase. To complement these changes, the sea temperatures and daylight hours also incrementally increase, providing a more balanced environment. Accordingly, a decrease in cloud coverage is observed, providing clearer skies for outdoor activities. Hence, September ushers La Serena into the refreshing ambiance of the spring season.Temperature
September records an average high-temperature of a still refreshing 18.6°C (65.5°F), indicating a minor variation from the preceding month. During September, the temperature is averaged to a low of 11.7°C (53.1°F) at night.Humidity
The average relative humidity in September in La Serena, Chile, is 59%.Rainfall
January, February, April, September and December are months without rainfall.Sea temperature
In La Serena, the average seawater temperature in September is 13.6°C (56.5°F).Note: Diving into 13.6°C (56.5°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
In La Serena, the average length of the day in September is 11h and 56min.On the first day of the month, sunrise is at 06:59 and sunset at 18:30 -04. On the last day of September, sunrise is at 07:23 and sunset at 19:46 -03.
Note: On Sunday, 08. September 2024, at 00:00, Daylight Saving Time starts, and the time zone changes from -04 to -03. Daylight Saving Time lasts until Sunday, 06. April 2025, at 00:00; consequently, the time zone reverts from -03 to -04.
Sunshine
In La Serena, Chile, the average sunshine in September is 9.6h.UV index
The months with the lowest UV index are May through July and September, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the average person.Note: The UV index of 4 during September translates into the following guidance:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
La Serena, Chile
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is February (23.6°C).
The month with the lowest average high temperature is July (17.1°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is February (16.3°C).
The coldest month (with the lowest average low temperature) is July (10.8°C).
Average pressure in September
La Serena, Chile
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is July (1019mbar).
The month with the lowest atmospheric pressure is February (1014.2mbar).
Average wind speed in September
La Serena, Chile
- Average wind speed in September: 9.6km/h
The windiest month (with the highest average wind speed) is December (10.7km/h).
The calmest months (with the lowest average wind speed) are May and June (7.5km/h).
Average humidity in September
La Serena, Chile
- Average humidity in September: 59%
The months with the highest relative humidity are January and February (66%).
The month with the lowest relative humidity is June (58%).
Average rainfall in September
La Serena, Chile
- Average rainfall in September: 0mm
The wettest month (with the highest rainfall) is June (14mm).
The driest months (with the least rainfall) are January, February, April, September and December (0mm).
Average rainfall days in September
La Serena, Chile
- Average rainfall days in September: 0.8 days
The month with the highest number of rainy days is June (2.3 days).
The month with the least rainy days is November (0.2 days).
Average sea temperature in September
La Serena, Chile
- Average sea temperature in September: 13.6°C
The best month for swimming (with the highest average sea temperature) is February (18.6°C).
The coldest month (with the lowest average sea temperature) is August (13.4°C).
Average daylight in September /
Average sunshine in September
La Serena, Chile
- Average daylight in September: 11h and 54min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
- Average sunshine in September: 9h and 36min
The month with the most sunshine is February (Average sunshine: 10h and 0min).
The month with the least sunshine is July (Average sunshine: 9h and 6min).
Average sunshine days in September
La Serena, Chile
- Average sunshine days in September: 29.2 days
The month with the most sunshine days is March (30.3 days).
The month with the least sunshine days is February (27.3 days).
Average UV index in September
La Serena, Chile
- Average UV index in September: 4
The month with the highest UV index is January (UV index 6).
The months with the lowest UV index are May, June, July and September (UV index 4).
Average cloud cover in September
La Serena, Chile
- Average cloud cover in September: 10
The month with the most cloud cover is May (Cloud cover 15).
The month with the least cloud cover is February (Cloud cover 4).
Average visibility in September
La Serena, Chile
- Average visibility in September: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
