Mariscos Weather in September
During September, Mariscos experiences very high daytime temperatures of 32°C (90°F) and cooler nights around 23°C (73°F). September sits within the rainy season, so expect regular and often heavy rainfall.
Rainfall in Mariscos in September
Mariscos is in the rainy season in September, with rain on around 21 days and an average of 317 mm (12 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in Mariscos in September
Daytime highs in Mariscos in September reach 32°C (90°F), with nights around 23°C (73°F). If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 23°C (73°F) overnight, it stays warm after dark. Light, breathable clothing and good airflow in your room make a noticeable difference.September in Mariscos has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guatemala, check out our Mariscos's climate page.
Mariscos Temperature in September
Min Temperature
23°C (73°F)
Max Temperature
32°C (90°F)
Chance of Rain
69%
Precipitation
317 mm (12 in)
Rainy days
21 days
Daily Historical Temperatures
44-year average (1978-2025)
Based on our historical records, temperatures in Mariscos typically stay consistent throughout September, with daily highs averaging around 32°C (90°F). Nights are warm, with lows around 21°C (70°F).
Average temperatures in September
Daily Historical Precipitation
44-year average (1978-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Mariscos in September
Browse day-by-day weather records for Mariscos spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mariscos historical weather extremes in September
Based on 29 years of weather observations in Mariscos between 1996 and 2025, these are the recorded extremes.
- Mariscos recorded its highest September temperature of 37°C (99°F) on September 7, 2025.
- Mariscos experienced its chilliest September day on September 30, 2001, reaching only 23°C (73°F).
- Nighttime temperatures dropped to 16°C (61°F) on September 24, 2017, marking the coldest September night on record.
Best Places in Guatemala in September
Find out more about the weather in Guatemala and which places have the best travel conditions in this month. See all of Guatemala in September →
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unpleasant
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What to Wear in Mariscos in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can.What To Do in Mariscos in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Guatemala, check out our Mariscos's climate page.
See the full Mariscos climate overview or explore weather in Guatemala.
