Montezuma Weather in September

September in Montezuma sees daytime temperatures around 29°C (84°F) and lows of 25°C (77°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.

Rainfall in Montezuma in September

As part of the rainy season, Montezuma sees around 23 days of rain in September, with an average of 391 mm (15 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.

Temperature in Montezuma in September

Daytime highs in Montezuma in September reach 29°C (84°F), with nights around 25°C (77°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.

Sunshine in Montezuma in September

The area enjoys a moderate level of sunlight, with around 159 hours. It's a good balance between sunny and rainy days.

September in Montezuma can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.

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

Montezuma Temperature in September

Min Temperature 25°C (77°F)  

Max Temperature 29°C (84°F)  

Chance of Rain 75%  

Precipitation 391 mm (15 in)  

Rainy days 23 days  

Sunshine 159 hours *  

Percentage Sunshine *  

* Data from: Puntarenas, Costa Rica (43 KM, 26 Miles).

Historical weather for Montezuma in September

Browse day-by-day weather records for Montezuma spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Montezuma historical weather extremes in September

Our historical data for Montezuma spans 2006 to 2025, revealing these weather extremes.

• The warmest day in September was on September 20, 2015, with a maximum of 30°C (86°F).
• On September 24, 2010, Montezuma saw its coldest September day with temperatures maxing out at 25°C (77°F).
• Nighttime temperatures dropped to 23°C (73°F) on September 21, 2006, marking the coldest September night on record.
• The wettest day in September Montezuma was on September 11, 2013 with 120 mm (4.7 in) of precipitation.

What to Wear in Montezuma in September

Warm but pleasant conditions in Montezuma in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. It's going to pour! Pack a good poncho and prepare for very wet conditions. Bring sunglasses since you'll have some sunny periods throughout the month

What To Do in Montezuma in September

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

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

7/10

Outdoor sports

7/10

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 Costa Rica, check out our Montezuma's climate page.

More climate data for Montezuma

Temperature Rainfall Sunshine

See the full Montezuma climate overview or explore weather in Costa Rica.