San Juan, Puerto Rico Hourly Forecast
San Juan temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 1 PM - around 88°
- Coolest hour: 5 AM - around 78°
- Highest rain chance: 5 AM (26%) - pack accordingly
- UV peak: 12 PM at index 11 - sun protection recommended
- Windiest: 2 PM at 19 mph
San Juan hourly weather - Friday, August 7
In San Juan, expect a high near 84°F (29°C) around 6 PM and a low of 79°F (26°C) near 11 PM; precipitation risk peaks at 22% around 11 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 6 PM | Sunny | 84° | 89° | 5% | 16 mph E | 67% | 0 | |
| 7 PM | Clear | 82° | 86° | 7% | 13 mph E | 73% | 0 | |
| 8 PM | Clear | 80° | 84° | 9% | 12 mph E | 76% | 0 | |
| 9 PM | Patchy rain nearby | 80° | 84° | 18% | 11 mph E | 79% | 0 | |
| 10 PM | Patchy rain nearby | 80° | 83° | 20% | 11 mph E | 80% | 0 | |
| 11 PM | Patchy rain nearby | 79° | 83° | 22% | 12 mph E | 81% | 0 |
San Juan hourly weather - Saturday, August 8
In San Juan, expect a high near 88°F (31°C) around 1 PM and a low of 78°F (25°C) near 5 AM; precipitation risk peaks at 26% around 5 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 79° | 82° | 15% | 12 mph E | 80% | 0 | |
| 1 AM | Patchy rain nearby | 79° | 82° | 15% | 12 mph E | 80% | 0 | |
| 2 AM | Patchy rain nearby | 79° | 82° | 21% | 11 mph ESE | 80% | 0 | |
| 3 AM | Partly Cloudy | 78° | 81° | 12% | 10 mph ESE | 81% | 0 | |
| 4 AM | Patchy rain nearby | 78° | 81° | 17% | 9 mph ESE | 83% | 0 | |
| 5 AM | Patchy rain nearby | 78° | 82° | 26% | 7 mph SE | 84% | 0 | |
| 6 AM | Patchy rain nearby | 78° | 82° | 21% | 8 mph SE | 81% | 0 | |
| 7 AM | Sunny | 79° | 82° | 7% | 9 mph ESE | 76% | 0 | |
| 8 AM | Sunny | 82° | 86° | 4% | 11 mph ESE | 66% | 2 | |
| 9 AM | Sunny | 84° | 88° | 4% | 13 mph ESE | 62% | 4 | |
| 10 AM | Sunny | 86° | 91° | 3% | 14 mph E | 58% | 7 | |
| 11 AM | Sunny | 87° | 92° | 3% | 16 mph E | 56% | 10 | |
| 12 PM | Sunny | 88° | 94° | 3% | 17 mph E | 58% | 11 | |
| 1 PM | Patchy rain nearby | 88° | 95° | 11% | 17 mph E | 61% | 11 | |
| 2 PM | Patchy rain nearby | 87° | 96° | 15% | 19 mph ENE | 64% | 9 | |
| 3 PM | Patchy rain nearby | 86° | 95° | 15% | 19 mph ENE | 67% | 6 | |
| 4 PM | Patchy rain nearby | 86° | 93° | 14% | 17 mph ENE | 66% | 3 | |
| 5 PM | Sunny | 85° | 92° | 5% | 16 mph E | 66% | 1 | |
| 6 PM | Patchy rain nearby | 84° | 90° | 18% | 16 mph E | 71% | 0 | |
| 7 PM | Patchy rain nearby | 82° | 88° | 13% | 14 mph E | 77% | 0 | |
| 8 PM | Patchy rain nearby | 81° | 86° | 26% | 13 mph E | 80% | 0 | |
| 9 PM | Patchy rain nearby | 80° | 86° | 21% | 12 mph E | 81% | 0 | |
| 10 PM | Patchy rain nearby | 80° | 85° | 20% | 11 mph ESE | 81% | 0 | |
| 11 PM | Patchy rain nearby | 80° | 84° | 21% | 12 mph E | 83% | 0 |
San Juan hourly weather - Sunday, August 9
In San Juan, expect a high near 88°F (31°C) around 12 PM and a low of 79°F (26°C) near 6 AM; precipitation risk peaks at 38% around 7 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 80° | 84° | 19% | 13 mph E | 83% | 0 | |
| 1 AM | Patchy rain nearby | 80° | 83° | 19% | 13 mph E | 83% | 0 | |
| 2 AM | Patchy rain nearby | 79° | 83° | 24% | 12 mph E | 83% | 0 | |
| 3 AM | Patchy rain nearby | 79° | 82° | 25% | 12 mph E | 84% | 0 | |
| 4 AM | Patchy rain nearby | 79° | 82° | 26% | 12 mph E | 84% | 0 | |
| 5 AM | Patchy rain nearby | 79° | 82° | 24% | 12 mph E | 84% | 0 | |
| 6 AM | Patchy rain nearby | 79° | 82° | 25% | 12 mph E | 85% | 0 | |
| 7 AM | Patchy rain nearby | 80° | 84° | 38% | 12 mph ESE | 83% | 0 | |
| 8 AM | Patchy rain nearby | 82° | 88° | 26% | 12 mph ESE | 75% | 2 | |
| 9 AM | Patchy rain nearby | 85° | 92° | 16% | 15 mph E | 67% | 4 | |
| 10 AM | Patchy rain nearby | 86° | 93° | 12% | 16 mph E | 64% | 7 | |
| 11 AM | Patchy rain nearby | 87° | 94° | 11% | 17 mph E | 61% | 9 | |
| 12 PM | Patchy rain nearby | 88° | 94° | 13% | 17 mph ENE | 61% | 10 | |
| 1 PM | Partly Cloudy | 88° | 95° | 5% | 19 mph ENE | 62% | 10 | |
| 2 PM | Sunny | 87° | 94° | 5% | 19 mph E | 64% | 8 | |
| 3 PM | Sunny | 87° | 94° | 5% | 19 mph E | 62% | 6 | |
| 4 PM | Sunny | 86° | 93° | 5% | 17 mph E | 63% | 3 | |
| 5 PM | Sunny | 86° | 92° | 5% | 17 mph E | 66% | 1 | |
| 6 PM | Sunny | 84° | 91° | 6% | 16 mph E | 70% | 0 | |
| 7 PM | Patchy rain nearby | 82° | 88° | 20% | 14 mph E | 75% | 0 | |
| 8 PM | Patchy rain nearby | 81° | 87° | 23% | 13 mph E | 79% | 0 | |
| 9 PM | Patchy rain nearby | 81° | 86° | 21% | 13 mph E | 80% | 0 | |
| 10 PM | Patchy rain nearby | 80° | 85° | 22% | 13 mph E | 81% | 0 | |
| 11 PM | Patchy rain nearby | 80° | 85° | 25% | 12 mph ESE | 82% | 0 |
Quick answers for the hours ahead
What is the warmest hour in San Juan today?
Will it rain in San Juan tonight?
When is the UV index highest in San Juan today?
San Juan hour-by-hour: what to expect
Over the next 24 hours in San Juan, temperatures range from 78°F (25°C) around 5 AM up to 88°F (31°C) near 1 PM - right in line with the typical August high of 88°F (31°C).
A stray shower can't be ruled out - Rain chances top out at 26% around 5 AM. Wind picks up to 19 mph (30 km/h) from the ENE near 2 PM. UV reaches 11 (12 PM) - sun protection recommended through midday.
The “feels like” column blends humidity and wind into an apparent temperature - see how it works in our feels-like temperature guide. Planning further ahead? Check the San Juan 14-day forecast or the monthly climate averages.