San Juan
Puerto Rico, USA
Long-term weather forecast
Long-term weather forecast

November weather forecast and climate
San Juan, PR

An old fort building and a view of the stunning San Juan city, Puerto Rico, with a clear view of the calm waterfront
An old fort building and a view of the stunning San Juan city, Puerto Rico, with a clear view of the calm waterfront
The last month of the autumn, November, is another warm month in San Juan, Puerto Rico, with average temperature varying between 85.8°F (29.9°C) and 75.2°F (24°C).

Temperature

In November, the average high-temperature is almost the same as in October - a moderately hot 85.8°F (29.9°C). The average low-temperature, in San Juan, is 75.2°F (24°C).

Heat index

The average heat index in November is calculated to a sweltering 97.3°F (36.3°C). Take special precautions - heat exhaustion and heat cramps are expected. Heatstroke may occur with lengthy activity.
Note that heat index values are valued for light wind and location in the shade. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature', 'feels like', 'felt air temperature', or 'real feel', is what the temperature feels like to the human body when the air temperature is combined with the relative humidity. Additional factors like activity, differences in body mass, height, and shape, wind, and metabolic differences affect individual temperature impact. Be aware that direct exposure to sunlight increases heat impact, and may raise the heat index additionally, by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Children are often less aware of the need to rest and re-hydrate. Thirst is a late sign of dehydration - it is vital to remain hydrated, particularly during prolonged physical activities.
The human body normally cools itself by perspiration. Excessive warmth is eliminated from the body by evaporation of sweat. Under high air temperature and humidity (high heat index) conditions, perspiration is limited, and the perception of heat is increased. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

In November, the average relative humidity is 76.2%.

Rainfall

In San Juan, Puerto Rico, during 19.6 rainfall days, 7" (178mm) of precipitation is typically accumulated. In San Juan, Puerto Rico, during the entire year, the rain falls for 198.5 days and collects up to 70.6" (1794mm) of precipitation.

Ocean temperature

In San Juan, in November, the average water temperature is 83.5°F (28.6°C).
Note: For swimming, diving, and other water activities, temperatures between 77°F (25°C) and 84.2°F (29°C) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

Daylight

In November, the average length of the day in San Juan is 11.3h.

Sunshine

With an average of 6.7h of sunshine, November has the least sunshine of the year in San Juan, Puerto Rico.

UV index

In San Juan, the average daily maximum UV index is 9. A UV Index estimate of 8 to 10 represents a very high health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
Note: The daily maximum UV index of 9 in November interpret into the following advice:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the temperature in November in San Juan?

In November, the average high-temperature is 85.8°F (29.9°C), and the average low-temperature is 75.2°F (24°C). The average heat index (a.k.a. 'feels like', 'felt air temperature'), that factores the actual air temperature with the relative humidity, in November is calculated to 97.3°F (36.3°C).

What is the average humidity in November in San Juan?

In November, the average relative humidity in San Juan, Puerto Rico, is 76.2%.

How many days does it rain in November in San Juan?

In San Juan, during November, the rain falls for 19.6 days and regularly aggregates up to 7" (178mm) of precipitation.

How warm is the water in November in San Juan?

In San Juan, the average seawater temperature in November is 83.5°F (28.6°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in November in San Juan?

In November, the average length of the day is 11.3h.

What is the month with the least sunshine in San Juan?

November has the least sunshine of the year, with an average of 6.7h of sunshine.

How long on average sun shines in November in San Juan?

The average sunshine in November in San Juan is 6.7h.

What is the UV index intensity in November in San Juan?

In San Juan, the average daily maximum UV index in November is 9. A UV Index of 8 to 10 symbolizes a very high health risk from unsafe exposure to the Sun's UV rays.
Average temperature in November - San Juan, PR
  • Average high temperature in November: 85.9°F

Warmest months (with the highest average high temperature) are August and September (89.2°F).
The month with the lowest average high temperature is January (83.2°F).

  • Average low temperature in November: 75.2°F

The month with the highest average low temperature is August (78.2°F).
Coldest months (with the lowest average low temperature) are January and February (72°F).

Average humidity in November - San Juan, PR
  • Average humidity in November: 76.2%

The month with the highest relative humidity is October (76.9%).
The month with the lowest relative humidity is March (71%).

Average rainfall in November - San Juan, PR
  • Average rainfall in November: 7"

The wettest month (with the highest rainfall) is August (7.7").
The driest month (with the lowest rainfall) is March (3.1").

Average rainfall days in November - San Juan, PR
  • Average rainfall days in November: 19.6 days

Months with the highest number of rainy days are November and December (19.6 days).
The month with the lowest number of rainy days is March (12.2 days).

Average sea temperature in November - San Juan, PR
  • Average sea temperature in November: 83.5°F

The best month for swimming (with the highest average sea temperature) is September (84.9°F).
The coldest month (with the lowest average sea temperature) is February (78.9°F).

Average daylight in November / Average sunshine in November - San Juan, PR
  • Average daylight in November: 11.3h

The month with the longest days is June (Average daylight: 13.2h).
The month with shortest days is December (Average daylight: 11h).

  • Average sunshine in November: 6.7h

Months with most sunshine are March and July (Average sunshine: 9.1h).
The month with least sunshine is November (Average sunshine: 6.7h).

Average UV index in November - San Juan, PR
  • Average UV index in November: 9

Months with the highest UV index are March, April, May, June, July, August and September (UV index 12).
Months with the lowest UV index are January and December (UV index 8).