| < July >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Sea or Water Temp
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average sea tempeature is 28 °C (82.4 °F).
- The average temperature in San Juan in July is hot at 27 °C (80.6 °F).
- Afternoons can be very hot with average high temperatures reaching 31 °C (87.8 °F).
- Overnight temperatures are generally fairly hot with an average low of 23 °C (73.4 °F).
- The average diurnal temperature range/ variation in July is 8 °C (14.4 °F).
- The weather in July is a little damp with rain more often than not. Some 159mm (6.3in) of fluid is transfered during on average 21 days.
- In July the skies in San Juan are moderately sunny having an average of a respectable 8:23 of brilliant sunlight per day.
- The shortest day is 12:57 long and the longest day is 13:12 long with an average length of 13:06.
- There are approximately 4:36 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 64.6% of daylight hours and cloudy 35.4% of daylight hours.
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Weather Trend Graph for July in San Juan, Puerto Rico
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