San Juan, Puerto Rico 14-Day Forecast
Puerto Rico 🇵🇷
86°
Sunny right now
Today: high 86°, low 80°
Updated 1 hour ago
San Juan weather for the next 14 days
Thursday, August 27
Patchy rain nearby High 86° Low 80°Precipitation
57%
· 0.05 in
Max wind
17 mph
Humidity
75%
UV index
12 - Extreme
Sunrise / sunset
06:08 AM / 06:42 PM
Friday, August 28
Patchy rain nearby High 87° Low 79°Precipitation
60%
· 0.07 in
Max wind
18 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:09 AM / 06:42 PM
Saturday, August 29
Patchy rain nearby High 87° Low 80°Precipitation
67%
· 0.1 in
Max wind
18 mph
Humidity
76%
UV index
8 - Very High
Sunrise / sunset
06:09 AM / 06:41 PM
Sunday, August 30
Patchy rain nearby High 86° Low 80°Precipitation
78%
· 0.23 in
Max wind
18 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
06:09 AM / 06:40 PM
Monday, August 31
Light rain shower High 86° Low 80°Precipitation
85%
· 0.48 in
Max wind
17 mph
Humidity
77%
UV index
7 - High
Sunrise / sunset
06:09 AM / 06:39 PM
Tuesday, September 1
Light rain shower High 87° Low 78°Precipitation
79%
· 0.58 in
Max wind
16 mph
Humidity
78%
UV index
8 - Very High
Sunrise / sunset
06:09 AM / 06:38 PM
Wednesday, September 2
Patchy rain nearby High 88° Low 78°Precipitation
80%
· 0.21 in
Max wind
15 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
06:10 AM / 06:38 PM
Thursday, September 3
Patchy rain nearby High 87° Low 81°Precipitation
58%
· 0.04 in
Max wind
16 mph
Humidity
78%
UV index
7 - High
Sunrise / sunset
06:10 AM / 06:37 PM
Friday, September 4
Patchy rain nearby High 87° Low 81°Precipitation
49%
· 0.03 in
Max wind
17 mph
Humidity
78%
UV index
8 - Very High
Sunrise / sunset
06:10 AM / 06:36 PM
Saturday, September 5
Patchy rain nearby High 86° Low 80°Precipitation
24%
· 0.01 in
Max wind
18 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
06:10 AM / 06:35 PM
Sunday, September 6
Patchy rain nearby High 88° Low 81°Precipitation
57%
· 0.04 in
Max wind
17 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
06:10 AM / 06:34 PM
Monday, September 7
Overcast High 88° Low 80°Precipitation
23%
· 0.0 in
Max wind
16 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
06:10 AM / 06:33 PM
Tuesday, September 8
Patchy rain nearby High 86° Low 80°Precipitation
46%
· 0.03 in
Max wind
18 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
06:11 AM / 06:33 PM
San Juan 14-day outlook: the story
The warmest day of San Juan's 14-day outlook is Sunday, September 6 with a high near 88°F (31°C); the coolest night comes Wednesday, September 2, dipping to 78°F (26°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 86°F (30°C), right in line with the typical August high of 88°F (31°C).
Precipitation is most likely on Thursday 27, Friday 28, Saturday 29, Sunday 30 and beyond; the wettest day looks like Tuesday, September 1 with about 0.58 in (14.7 mm) expected. For the weekend, expect Saturday 87°F (31°C) and patchy rain nearby / Sunday 86°F (30°C) and patchy rain nearby.
For typical conditions month by month, see the San Juan climate & average temperatures guide.
San Juan forecast questions
Will it rain in San Juan this week?
The forecast currently shows meaningful precipitation chances on 9 of the next 14 days, peaking around Tuesday, September 1.
What will be the warmest day in San Juan over the next 14 days?
Sunday, September 6, with a forecast high near 88°F (31°C).
How accurate is a 14-day forecast for San Juan?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in San Juan by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 83° | 71° | 14 | 2.1 in | 10.8 h/day | 77% |
| February | 83° | 72° | 15 | 2.4 in | 10.8 h/day | 75% |
| March | 84° | 72° | 15 | 2.2 in | 11.1 h/day | 73% |
| April | 85° | 73° | 16 | 3.1 in | 11.7 h/day | 74% |
| May | 87° | 75° | 17 | 3.1 in | 11.9 h/day | 75% |
| June | 89° | 76° | 17 | 2.4 in | 12.2 h/day | 75% |
| July | 88° | 77° | 19 | 3.1 in | 12.0 h/day | 76% |
| August | 88° | 77° | 19 | 3.6 in | 11.5 h/day | 78% |
| September | 88° | 77° | 22 | 6.1 in | 10.8 h/day | 81% |
| October | 87° | 76° | 22 | 4.9 in | 10.3 h/day | 82% |
| November | 85° | 74° | 20 | 5.3 in | 9.7 h/day | 82% |
| December | 83° | 73° | 18 | 2.4 in | 10.6 h/day | 79% |
14-day forecasts nearby