Valparaíso
Chile
Long-term weather forecast
Long-term weather forecast

September weather forecast and climate
Valparaíso, Chile

The first month of the spring, September, is still a mild month in Valparaíso, Chile, with average temperature ranging between min 9.5°C (49.1°F) and max 15.4°C (59.7°F).

Temperature

In September, the average high-temperature is relatively the same as in August - a still mild 15.4°C (59.7°F). In September, in Valparaíso, the average low-temperature is 9.5°C (49.1°F).

Humidity

In Valparaíso, the average relative humidity is 78%.

Rainfall

In September, in Valparaíso, the rain falls for 2.7 days. Throughout September, 26.7mm (1.05") of precipitation is accumulated. In Valparaíso, during the entire year, the rain falls for 26.6 days and collects up to 372.5mm (14.67") of precipitation.

Sea temperature

In September, the average sea temperature in Valparaíso is 13.2°C (55.8°F).
Note: Swimming in 13.2°C (55.8°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.

Daylight

In Valparaíso, the average length of the day in September is 11.9h.

Sunshine

In September, the average sunshine is 4.9h.

UV index

The average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from the exposure to the Sun's UV radiation for the average person.
Note: The daily maximum UV index of 6 interpret into the following advice:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Valparaíso?

In September, in Valparaíso, Chile, the average high-temperature is 15.4°C (59.7°F), and the average low-temperature is 9.5°C (49.1°F).

What is the average humidity in September in Valparaíso?

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

How much does it rain in Valparaíso in September?

In Valparaíso, Chile, in September, it is raining for 2.7 days, with typically 26.7mm (1.05") of accumulated precipitation.

What is the water temperature in September in Valparaíso?

In Valparaíso, in September, the average water temperature is 13.2°C (55.8°F). Swimming in 13.2°C (55.8°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.

How many hours of daylight does Valparaíso have in September?

In September, the average length of the day is 11.9h.

How long on average sun shines in September in Valparaíso?

In Valparaíso, the average sunshine in September is 4.9h.

How high is the UV index in September in Valparaíso?

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from the exposure to the Sun's UV rays.
Average temperature in September - Valparaíso, Chile
  • Average high temperature in September: 15.4°C

The warmest month (with the highest average high temperature) is January (20.8°C).
The month with the lowest average high temperature is July (14.3°C).

  • Average low temperature in September: 9.5°C

Months with the highest average low temperature are January and February (13.5°C).
The coldest month (with the lowest average low temperature) is July (9.2°C).

Average humidity in September - Valparaíso, Chile
  • Average humidity in September: 78%

Months with the highest relative humidity are May, June and July (80%).
The month with the lowest relative humidity is December (70%).

Average rainfall in September - Valparaíso, Chile
  • Average rainfall in September: 26.7mm

The wettest month (with the highest rainfall) is July (111.2mm).
The driest month (with the lowest rainfall) is February (0mm).

Average rainfall days in September - Valparaíso, Chile
  • Average rainfall days in September: 2.7 days

The month with the highest number of rainy days is July (6.3 days).
The month with the lowest number of rainy days is February (0 days).

Average sea temperature in September - Valparaíso, Chile
  • Average sea temperature in September: 13.2°C

The best month for swimming (with the highest average sea temperature) is February (17.9°C).
The coldest month (with the lowest average sea temperature) is July (13.1°C).

Average daylight in September / Average sunshine in September - Valparaíso, Chile
  • Average daylight in September: 11.9h

The month with the longest days is December (Average daylight: 14.3h).
The month with shortest days is June (Average daylight: 10h).

  • Average sunshine in September: 4.9h

The month with most sunshine is January (Average sunshine: 9h).
The month with least sunshine is June (Average sunshine: 2.7h).

Average UV index in September - Valparaíso, Chile
  • Average UV index in September: 6

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).