September in Huatulco brings high temperatures around 28°C (82°F) during the day, dropping to 22°C (72°F) at night, with the most rainfall of the year.
If you prefer dry days with pleasant temperatures, September may not be the ideal month to visit Huatulco. Our weather planner can help you explore destinations with more pleasant weather conditions.
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Pick a month to see the average temperature, rainfall and sunshine in Huatulco - and find the best time to visit.
47-year average (1976-2025)
Based on our historical records, temperatures in Huatulco typically stay consistent throughout September, with daily highs averaging around 28°C (82°F). Nights are warm, with lows typically ranging from 22°C (72°F) to 25°C (77°F).
Browse day-by-day weather records for Huatulco spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
The extremes listed below come from historical weather data collected in Huatulco from 2015 through 2026.
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in September →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! Expect water temperatures of around 29°C (84°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
Temperature Rainfall Sunshine Humidity Water Temp
See the full Huatulco climate overview or explore weather in Mexico.
Where to go in September - average daytime high across popular destinations.
Puerto Peñasco
34°C (93°F) Los Cabos
32°C (90°F) Tulum31°C (88°F) Cancún30°C (86°F) Playa del Carmen31°C (88°F) Puerto Vallarta29°C (84°F) San Miguel de Allende
27°C (81°F) Mexico City23°C (73°F) Need travel inspiration? Check out our bucket list articles and be inspired.
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