San Juan, Puerto Rico Hourly Forecast
San Juan temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 3 PM - around 87°
- Coolest hour: 6 AM - around 77°
- Highest rain chance: 12 AM (20%) - pack accordingly
- UV peak: 12 PM at index 12 - sun protection recommended
- Windiest: 3 PM at 17 mph
San Juan hourly weather - Thursday, August 6
In San Juan, expect a high near 87°F (31°C) around 3 PM and a low of 79°F (26°C) near 11 PM; precipitation risk peaks at 19% around 11 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 3 PM | Sunny | 87° | 93° | 3% | 17 mph E | 58% | 6 | |
| 4 PM | Sunny | 87° | 92° | 3% | 17 mph E | 59% | 3 | |
| 5 PM | Sunny | 86° | 91° | 4% | 16 mph E | 61% | 1 | |
| 6 PM | Sunny | 84° | 90° | 5% | 15 mph E | 66% | 0 | |
| 7 PM | Clear | 82° | 87° | 6% | 13 mph E | 71% | 0 | |
| 8 PM | Clear | 80° | 84° | 8% | 11 mph ESE | 75% | 0 | |
| 9 PM | Clear | 80° | 83° | 9% | 10 mph ESE | 76% | 0 | |
| 10 PM | Partly Cloudy | 79° | 82° | 10% | 9 mph ESE | 77% | 0 | |
| 11 PM | Patchy rain nearby | 79° | 82° | 19% | 9 mph ESE | 78% | 0 |
San Juan hourly weather - Friday, August 7
In San Juan, expect a high near 87°F (31°C) around 12 PM and a low of 77°F (25°C) near 6 AM; precipitation risk peaks at 20% around 12 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 79° | 82° | 20% | 9 mph ESE | 78% | 0 | |
| 1 AM | Clear | 79° | 82° | 10% | 9 mph ESE | 78% | 0 | |
| 2 AM | Partly Cloudy | 78° | 81° | 11% | 9 mph ESE | 79% | 0 | |
| 3 AM | Partly Cloudy | 78° | 81° | 13% | 8 mph ESE | 80% | 0 | |
| 4 AM | Partly Cloudy | 78° | 81° | 14% | 8 mph ESE | 81% | 0 | |
| 5 AM | Partly Cloudy | 78° | 81° | 13% | 8 mph ESE | 81% | 0 | |
| 6 AM | Partly Cloudy | 77° | 81° | 12% | 8 mph ESE | 81% | 0 | |
| 7 AM | Partly Cloudy | 79° | 82° | 11% | 9 mph ESE | 78% | 0 | |
| 8 AM | Patchy rain nearby | 82° | 86° | 15% | 10 mph ESE | 72% | 1 | |
| 9 AM | Patchy rain nearby | 84° | 89° | 14% | 12 mph E | 66% | 4 | |
| 10 AM | Sunny | 86° | 91° | 4% | 13 mph E | 62% | 7 | |
| 11 AM | Sunny | 87° | 92° | 4% | 15 mph ENE | 60% | 10 | |
| 12 PM | Sunny | 87° | 93° | 4% | 16 mph ENE | 60% | 12 | |
| 1 PM | Patchy rain nearby | 87° | 93° | 13% | 17 mph ENE | 63% | 12 | |
| 2 PM | Patchy rain nearby | 86° | 94° | 12% | 17 mph ENE | 65% | 10 | |
| 3 PM | Patchy rain nearby | 86° | 93° | 15% | 17 mph ENE | 67% | 7 | |
| 4 PM | Patchy rain nearby | 85° | 92° | 12% | 16 mph ENE | 67% | 4 | |
| 5 PM | Patchy rain nearby | 84° | 91° | 16% | 17 mph ENE | 70% | 1 | |
| 6 PM | Patchy rain nearby | 83° | 89° | 15% | 16 mph ENE | 74% | 0 | |
| 7 PM | Patchy rain nearby | 82° | 87° | 17% | 14 mph E | 74% | 0 | |
| 8 PM | Clear | 81° | 86° | 8% | 12 mph E | 75% | 0 | |
| 9 PM | Clear | 80° | 84° | 10% | 11 mph E | 77% | 0 | |
| 10 PM | Partly Cloudy | 80° | 83° | 12% | 11 mph E | 78% | 0 | |
| 11 PM | Patchy rain nearby | 79° | 83° | 19% | 10 mph E | 80% | 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 (26°C) near 3 AM; precipitation risk peaks at 64% around 3 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 79° | 83° | 25% | 10 mph E | 81% | 0 | |
| 1 AM | Light rain shower | 79° | 82° | 43% | 11 mph E | 82% | 0 | |
| 2 AM | Light rain shower | 79° | 82° | 38% | 12 mph E | 83% | 0 | |
| 3 AM | Light rain shower | 78° | 81° | 64% | 12 mph E | 84% | 0 | |
| 4 AM | Light rain shower | 79° | 82° | 48% | 12 mph ESE | 83% | 0 | |
| 5 AM | Patchy rain nearby | 79° | 82° | 21% | 11 mph ESE | 81% | 0 | |
| 6 AM | Clear | 79° | 81° | 10% | 11 mph ESE | 80% | 0 | |
| 7 AM | Sunny | 79° | 82° | 9% | 11 mph ESE | 79% | 0 | |
| 8 AM | Partly Cloudy | 81° | 85° | 9% | 11 mph ESE | 74% | 2 | |
| 9 AM | Patchy rain nearby | 83° | 88° | 11% | 12 mph E | 70% | 4 | |
| 10 AM | Patchy rain nearby | 85° | 92° | 17% | 14 mph E | 68% | 6 | |
| 11 AM | Patchy rain nearby | 86° | 93° | 12% | 16 mph E | 65% | 9 | |
| 12 PM | Sunny | 88° | 94° | 3% | 16 mph E | 59% | 11 | |
| 1 PM | Sunny | 88° | 95° | 3% | 17 mph E | 59% | 11 | |
| 2 PM | Sunny | 88° | 95° | 4% | 18 mph ENE | 62% | 9 | |
| 3 PM | Patchy rain nearby | 87° | 95° | 14% | 18 mph ENE | 65% | 6 | |
| 4 PM | Patchy rain nearby | 84° | 92° | 31% | 18 mph ENE | 73% | 3 | |
| 5 PM | Light rain shower | 84° | 91° | 21% | 17 mph ENE | 75% | 1 | |
| 6 PM | Patchy rain nearby | 83° | 90° | 15% | 15 mph E | 75% | 0 | |
| 7 PM | Clear | 82° | 88° | 10% | 13 mph E | 78% | 0 | |
| 8 PM | Clear | 81° | 86° | 10% | 13 mph E | 80% | 0 | |
| 9 PM | Patchy rain nearby | 80° | 85° | 22% | 12 mph E | 81% | 0 | |
| 10 PM | Patchy rain nearby | 80° | 84° | 20% | 11 mph E | 82% | 0 | |
| 11 PM | Patchy rain nearby | 80° | 84° | 23% | 11 mph ESE | 83% | 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 77°F (25°C) around 6 AM up to 87°F (31°C) near 3 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 20% around 12 AM. Wind picks up to 17 mph (27 km/h) from the E near 3 PM. UV reaches 12 (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.