San Juan Weather in October
San Juan in October sees high temperatures, with highs around 30°C (86°F) and overnight lows of 26°C (79°F). Rainfall is fairly high at around 133 mm (5.2 in) on average, so pack waterproofs just in case.
Rainfall in San Juan in October
Historically, approximately 21 days this month are expected to have rain, averaging 133 mm (5.2 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in San Juan in October
In October, expect high temperatures in San Juan, with highs of 30°C (86°F) and lows of 26°C (79°F) at night. Overall, the month follows a fairly predictable daily temperature pattern. Nights are warm at 26°C (79°F). It's worth making sure your accommodation has decent ventilation or air conditioning.
Sunshine in San Juan in October
The month enjoys around 206 hours of sunshine, creating mostly sunny days with good weather conditions.
Average water temperature in October
At 28°C (82°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.If you're looking for dry conditions and comfortable temperatures, October may not be the ideal month to visit San Juan. Our weather planner can help you explore destinations with more pleasant weather conditions.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Trinidad & Tobago, check out our San Juan's climate page.
San Juan Temperature in October
Min Temperature
26°C (79°F)
Max Temperature
30°C (86°F)
Water Temperature
28°C (82°F) *
Chance of Rain
68%
Precipitation
133 mm (5.2 in)
Rainy days
21 days
Humidity
85% *
Sunshine
206 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Juan typically stay consistent throughout October, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 24°C (75°F).
Average temperatures in October
Historical weather for San Juan in October
Browse day-by-day weather records for San Juan spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Juan historical weather extremes in October
The extremes listed below come from historical weather data collected in San Juan from 2005 through 2025.
- The warmest day in October was on October 17, 2016, with a maximum of 36°C (97°F).
- On October 5, 2022, San Juan saw its coldest October day with temperatures maxing out at 25°C (77°F).
- San Juan registered its coldest October night on October 28, 2018, with temperatures dropping to 21°C (70°F).
Best Places in Trinidad & Tobago in October
Find out more about the weather in Trinidad & Tobago and which places have the best travel conditions in this month. See all of Trinidad & Tobago in October →
perfect weather
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unpleasant
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What to Wear in San Juan 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. Prepare for significant rainfall with proper waterproof clothing and shoes. The water temperature sits at about 28°C (82°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in San Juan in October
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 Trinidad & Tobago, check out our San Juan's climate page.
Temperature Rainfall Sunshine Humidity Water Temp
See the full San Juan climate overview or explore weather in Trinidad & Tobago.
