Mejillones Weather in September

During September, Mejillones experiences pleasant daytime temperatures of 20°C (68°F) and cooler nights around 13°C (55°F). Rainfall is low, averaging just 5.5 mm (0.2 in) for the month.

Rainfall in Mejillones in September

Typically around 0 days of rainfall are expected, averaging 5.5 mm (0.2 in) for the month. Any rain that does arrive tends to come in a single sharp spell rather than prolonged drizzle.

Temperature in Mejillones in September

September tends to be one of the excellent months in Mejillones, with 20°C (68°F) in the afternoon and 13°C (55°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Mejillones in September

There are approximately 222 hours of sunshine this month, resulting in mostly clear days.

If you're planning additional trips, our weather planner can help you find destinations that match your weather preferences.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Chile, check out our Mejillones's climate page.

Mejillones Temperature in September

Min Temperature 13°C (55°F)  

Max Temperature 20°C (68°F)  

Chance of Rain 1%  

Precipitation 5.5 mm (0.2 in)  

Rainy days 0 days  

Humidity 78% *  

Sunshine 222 hours *  

Percentage Sunshine *  

* Data from: Antofagasta, Chile (37 KM, 23 Miles).

What to Wear in Mejillones in September

Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Dry conditions mean you won't need to worry about rain protection. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in Mejillones in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Chile, check out our Mejillones's climate page.

More climate data for Mejillones

Temperature Rainfall Sunshine Humidity

See the full Mejillones climate overview or explore weather in Chile.