San Juan, Puerto Rico 14-Day Forecast
Puerto Rico 🇵🇷
88°
Sunny right now
Today: high 88°, low 78°
Updated 10 min ago
San Juan weather for the next 14 days
Friday, August 7
Patchy rain nearby High 87° Low 77°Precipitation
21%
· 0.01 in
Max wind
17 mph
Humidity
73%
UV index
12 - Extreme
Sunrise / sunset
06:04 AM / 06:56 PM
Saturday, August 8
Patchy rain nearby High 88° Low 78°Precipitation
63%
· 0.11 in
Max wind
18 mph
Humidity
75%
UV index
11 - Extreme
Sunrise / sunset
06:04 AM / 06:55 PM
Sunday, August 9
Patchy rain nearby High 88° Low 78°Precipitation
51%
· 0.04 in
Max wind
19 mph
Humidity
74%
UV index
11 - Extreme
Sunrise / sunset
06:04 AM / 06:55 PM
Monday, August 10
Sunny High 89° Low 79°Precipitation
36%
· 0.02 in
Max wind
18 mph
Humidity
72%
UV index
8 - Very High
Sunrise / sunset
06:04 AM / 06:54 PM
Tuesday, August 11
Patchy rain nearby High 86° Low 80°Precipitation
61%
· 0.07 in
Max wind
17 mph
Humidity
75%
UV index
6 - High
Sunrise / sunset
06:05 AM / 06:54 PM
Wednesday, August 12
Patchy rain nearby High 88° Low 78°Precipitation
60%
· 0.09 in
Max wind
18 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:05 AM / 06:53 PM
Thursday, August 13
Patchy rain nearby High 88° Low 79°Precipitation
36%
· 0.02 in
Max wind
17 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:05 AM / 06:52 PM
Friday, August 14
Patchy rain nearby High 88° Low 79°Precipitation
42%
· 0.03 in
Max wind
21 mph
Humidity
72%
UV index
8 - Very High
Sunrise / sunset
06:05 AM / 06:52 PM
Saturday, August 15
Patchy rain nearby High 88° Low 79°Precipitation
57%
· 0.05 in
Max wind
21 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:06 AM / 06:51 PM
Sunday, August 16
Patchy rain nearby High 87° Low 79°Precipitation
63%
· 0.11 in
Max wind
20 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:06 AM / 06:50 PM
Monday, August 17
Patchy rain nearby High 87° Low 78°Precipitation
60%
· 0.07 in
Max wind
17 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:06 AM / 06:50 PM
Tuesday, August 18
Patchy rain nearby High 85° Low 80°Precipitation
82%
· 0.52 in
Max wind
17 mph
Humidity
77%
UV index
7 - High
Sunrise / sunset
06:06 AM / 06:49 PM
Wednesday, August 19
Patchy rain nearby High 88° Low 79°Precipitation
68%
· 0.11 in
Max wind
18 mph
Humidity
75%
UV index
7 - High
Sunrise / sunset
06:07 AM / 06:48 PM
San Juan 14-day outlook: the story
The warmest day of San Juan's 14-day outlook is Monday, August 10 with a high near 89°F (32°C); the coolest night comes Friday, August 7, dipping to 77°F (25°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 88°F (31°C), right in line with the typical August high of 88°F (31°C).
Precipitation is most likely on Saturday 8, Sunday 9, Tuesday 11, Wednesday 12 and beyond; the wettest day looks like Tuesday, August 18 with about 0.52 in (13.3 mm) expected. For the weekend, expect Saturday 88°F (31°C) and patchy rain nearby / Sunday 88°F (31°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, August 18.
What will be the warmest day in San Juan over the next 14 days?
Monday, August 10, with a forecast high near 89°F (32°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