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San Juan Weather Forecast

Temperature, wind, rain and more for San Juan

Puerto Rico

DayLocal TimeDirSpeed/
Gust		Temp/
Feels Like		HumidityPressureCloud AmountPrecip AmountWeather
Sat 21
Dec		11:00

SE
SE

 5 / 6 mph 84 / 88°F 75% 1015 mb
Low level cloud: 17%
Mid level cloud: 22%
High level cloud: 20%
Most Significant Cloud Type: low
26%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

 4 / 5 mph 85 / 89°F 75% 1012 mb
Low level cloud: 32%
Mid level cloud: 23%
High level cloud: 28%
Most Significant Cloud Type: low
43%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

SE
SE

 2 / 3 mph 83 / 86°F 80% 1012 mb
Low level cloud: 3%
Mid level cloud: 30%
High level cloud: 94%
Most Significant Cloud Type: medium
40%
Expect 0.2 In of precipitation over the past 3 hours.
0.2 In
20:00

S
S

 2 / 3 mph 79 / 84°F 82% 1015 mb
Low level cloud: 3%
Mid level cloud: 43%
High level cloud: 100%
Most Significant Cloud Type: medium
56%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
23:00

SSE
SSE

 4 / 6 mph 78 / 83°F 85% 1015 mb
Low level cloud: 0%
Mid level cloud: 32%
High level cloud: 44%
Most Significant Cloud Type: medium
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
Sun 22
Dec		02:00

SSE
SSE

 3 / 4 mph 76 / 81°F 86% 1014 mb
Low level cloud: 2%
Mid level cloud: 28%
High level cloud: 33%
Most Significant Cloud Type: medium
34%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
05:00

SSE
SSE

 4 / 6 mph 76 / 80°F 87% 1014 mb
Low level cloud: 4%
Mid level cloud: 27%
High level cloud: 100%
Most Significant Cloud Type: medium
41%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
08:00

SSE
SSE

 4 / 7 mph 79 / 81°F 86% 1016 mb
Low level cloud: 4%
Mid level cloud: 29%
High level cloud: 100%
Most Significant Cloud Type: medium
42%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
11:00

ESE
ESE

 6 / 6 mph 84 / 88°F 76% 1017 mb
Low level cloud: 7%
Mid level cloud: 43%
High level cloud: 20%
Most Significant Cloud Type: medium
63%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
14:00

E
E

 9 / 11 mph 86 / 91°F 71% 1014 mb
Low level cloud: 19%
Mid level cloud: 31%
High level cloud: 25%
Most Significant Cloud Type: low
33%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
17:00

ESE
ESE

 9 / 15 mph 82 / 86°F 82% 1014 mb
Low level cloud: 1%
Mid level cloud: 30%
High level cloud: 47%
Most Significant Cloud Type: medium
33%
Expect 0.1 In of precipitation over the past 3 hours.
0.1 In
20:00

ESE
ESE

 5 / 10 mph 78 / 83°F 83% 1017 mb
Low level cloud: 2%
Mid level cloud: 45%
High level cloud: 80%
Most Significant Cloud Type: medium
54%
Expect 0.3 In of precipitation over the past 3 hours.
0.3 In
23:00

ESE
ESE

 8 / 11 mph 77 / 82°F 87% 1017 mb
Low level cloud: 6%
Mid level cloud: 48%
High level cloud: 94%
Most Significant Cloud Type: medium
67%
Expect 0.0 In of precipitation over the past 3 hours.
0.0 In
The 7 day weather forecast summary for San Juan:

The forecast for San Juan in the coming week is predicting the average daytime maximum temperature will be around 28°C, with a high for the week of 30°C expected on the afternoon of Sunday 22nd. The average minimum temperature will be 24°C, dipping to its lowest on the morning of Saturday 28th at 23°C. The coming week will have some days seeing a little precipitation and some days with rain. Predictions are Sunday 28th will have the most precipitation with an accumulation of around 12.0mm. On the whole winds are likely to be moderate.

The day label given represents the local day relative to the local time for the location you are looking at.
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Day

This time is corrected for local time zones and where possible for daylight saving times.
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Local Time

The wind direction we use on this page is the direction the wind is coming from, given in a 16 point compass format.
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Dir

This refers to the sustained average wind speed, normally averaged over a period of 10 minutes for up to 3 hrs.
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Speed/
Gust

Temperature from our forecast perspective are fairly well defined, they are what we would expect to measure in a standard meteorological screen (in other words, shaded and well ventilated) at 2 metres above ground level.
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Temp/
Feels Like

The relative humidity is the percent of saturation humidity, generally calculated in relation to saturated vapour density.
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Humidity

The value given is a total predicted for the previous 3 hrs and includes the time of the forecast being looked at.
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Precip Amount

The total amount of cloud as a percentage is derived from looking at cloud cover throughout the atmosphere and estimating how these combine when looked at from the ground.
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Cloud Amount

Here we try to capture the feel of the weather as an image – it will never be perfect but is useful for a quick overview.
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Weather

When we measure for forecast air pressure we are normally doing this relative to a certain height and most commonly relative to Mean Sea Level.
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Pressure