Temperatures in October
It's warm in October in San Juan with an average temperature of 27°C. Temperatures this month range from a low of 26°C to a high of 29°C. At night, you can expect temperatures between 19°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for San Juan in October. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of October
The month of October starts in San Juan with hot temperatures, averaging around 29°C during the day and nights close to 22°C. There’s little chance of precipitation. The weather is mostly sunny and dry.
Mid-October
By mid-October, the average daytime temperature drops to around 28°C, with nights close to 21°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of October
By the end of October, the average daytime temperature in San Juan will be around 27°C, with nights close to 20°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in October
In October, there is an average of 46 mm of precipitation, spread over 6 days. The wind speed is around 4 Bft, mostly coming from the East.
The precipitation chance averages 18% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in October for San Juan. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
San Juan in October |
London | ||
|---|---|---|---|
 Average Temperature |
27°C | 15°C | |
 High Temp |
29°C | 17°C | |
| Low Temp |
26°C | 13°C | |
 Total Precipitation |
46 mm | 115 mm | |
| Rainy Days |
6 days | 14 days | |
September
UV index
The UV index is a maximum of 8 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
Is October a good time to visit San Juan?
Want nice weather? Then October is a great time to be in San Juan. You’ll have pleasant temperatures and not too much rain this month.
Temperature records for San Juan in October
With 39°C, San Juan hit the highest temperature in the last 10 years in October 2023. The lowest daytime temperature in this month was 21°C in 2016. The extreme night temperatures ranged from a low of 14°C to a high of 28°C.
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Daily Temperature in October in San Juan
This chart shows the average daily temperatures, both day and night, for each day in October in San Juan, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in October in San Juan
The chart below shows the average daily precipitation in October for San Juan, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for October, you can expect around 6 days of rain in San Juan.
Daily UV Index in October in San Juan
This chart shows the average daily UV index in October in San Juan, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in October in San Juan Over the Years
This chart shows the average temperature in October in San Juan, measured in degrees Celsius, over the past years.
Total Precipitation in October in San Juan Over the Years
This chart shows the average precipitation in October in San Juan, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in October for San Juan
Click on a specific day in October for detailed info on the typical weather on that day in San Juan. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in October in San Juan
Have you been to San Juan in October?
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Average Weather in San Juan by Month
Click on a month below to see detailed weather info for San Juan. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
