Monterrey weather in September (Costa Rica)

How is the weather in Monterrey in September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In September, Monterrey typically experiences high temperatures and heavy rainfall. Daytime temperatures hover around 29°C, while nights can cool down to about 21°C. Bear in mind, these are average temperatures, and it can get even warmer on particular days. Make sure to choose clothing that accommodates the warmth.

Monterrey in September falls under the rainy season with heavy rainfall, averaging around 301 mm for the month. When we look at the climate data from the last 30 years, we can expect around 23 days of rain.

If you're looking for dry conditions and comfortable temperatures, September may not be the ideal month to visit Monterrey. February and March typically offer the best circumstances. While May, June, July, August, September, October and November tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Monterrey climate page with graphs.

 

Monterrey, monthly averages in September

Min Temperature 21°C  

Max Temperature 29°C  

Chance of Rain 77%  

Precipitation 301 mm  

Rainy days 23 days  

Humidity 88% *  

* Data from: Los Chiles, Costa Rica (53 KM, 33 Miles).

Where to go in Costa Rica in September

Find out more about the weather in Costa Rica in September and which places have the best weather conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in Monterrey in September?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

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

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Monterrey.

Our site offers climate and forecast data for every country in the world. Are you going to Costa Rica? On this website you can find historical weather averages for many cities in Costa Rica. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.