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Compare Costa Rica weather in February, from dry and sunny Tamarindo to wetter Puerto Viejo, plus Jacó, Arenal and San José.
Nuevo Arenal Weather in October
Thinking of visiting Nuevo Arenal in October? Expect high temperatures reaching 29°C (84°F) during the day, dropping to 21°C (70°F) at night, and be prepared for the wettest month of the year.
Rainfall in Nuevo Arenal in October
As part of the rainy season, Nuevo Arenal sees around 22 days of rain in October, with an average of 318 mm (13 in). With rain on many days and solid totals, showers are frequent and often moderately heavy. Waterproof gear is a sensible idea.
Temperature in Nuevo Arenal in October
October in Nuevo Arenal brings high temperatures, with highs of 29°C (84°F) and nights around 21°C (70°F). This kind of day-to-night contrast is typical for this time of year. Nights are mild at around 21°C (70°F), which is comfortable for most people.If you're looking for dry conditions and comfortable temperatures, October may not be the ideal month to visit Nuevo Arenal. Our weather planner can help you explore destinations with more pleasant weather conditions.
Nuevo Arenal Temperature in October
Min Temperature
21°C (70°F)
Max Temperature
29°C (84°F)
Chance of Rain
74%
Precipitation
318 mm (13 in)
Rainy days
22 days
Humidity
89% *
* Data from: Los Chiles, Costa Rica (57 KM, 35 Miles).
Nuevo Arenal Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Nuevo Arenal - and find the best time to visit.
Daily Historical Temperatures
42-year average (1976-2025)
Based on our historical records, temperatures in Nuevo Arenal typically stay consistent throughout October, with daily highs averaging around 29°C (84°F). Nights are warm, with lows around 23°C (73°F).
Average temperatures in October
Daily Historical Precipitation
42-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather records for Nuevo Arenal in October
Browse day-by-day weather records for Nuevo Arenal spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Nuevo Arenal historical weather extremes in October
According to our 29 years of weather records for Nuevo Arenal, the following extremes were recorded between 1996 and 2025.
- The hottest October day on record in Nuevo Arenal reached 36°C (97°F) (October 3, 2013).
- The lowest daytime temperature in October was 22°C (72°F), recorded on October 31, 2001.
- The coldest night in October in Nuevo Arenal was on October 20, 2021, with a minimum of 18°C (64°F).
Best Places in Costa Rica in October
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in October →
perfect weather
pleasant
tolerable
unpleasant
poor
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).
What to Wear in Nuevo Arenal in October
Warm temperatures in October 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!
What To Do in Nuevo Arenal in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
Nuevo Arenal 3-Day Forecast
More climate data for Nuevo Arenal
See the full Nuevo Arenal climate overview or explore weather in Costa Rica.
Popular in October
Where to go in October - average daytime high across popular destinations.
Tamarindo
30°C (86°F) Santa Teresa28°C (82°F) Cahuita29°C (84°F) Fortuna28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Herradura28°C (82°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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