San Juan, Puerto Rico Hourly Forecast
San Juan temperature trend - Next 24 hours
The next 24 hours at a glance
- Warmest hour: 2 PM - around 86°
- Coolest hour: 4 AM - around 80°
- Highest rain chance: 5 AM (34%) - pack accordingly
- UV peak: 12 PM at index 12 - sun protection recommended
- Windiest: 3 PM at 17 mph
San Juan hourly weather - Wednesday, August 26
In San Juan, expect a high near 86°F (30°C) around 2 PM and a low of 82°F (28°C) near 11 PM; precipitation risk peaks at 24% around 9 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 2 PM | Sunny | 86° | 93° | 4% | 16 mph ENE | 66% | 9 | |
| 3 PM | Sunny | 86° | 93° | 5% | 17 mph ENE | 68% | 6 | |
| 4 PM | Sunny | 85° | 92° | 5% | 16 mph ENE | 69% | 3 | |
| 5 PM | Sunny | 84° | 91° | 6% | 15 mph ENE | 71% | 1 | |
| 6 PM | Sunny | 84° | 91° | 7% | 15 mph ENE | 74% | 0 | |
| 7 PM | Clear | 83° | 89° | 8% | 15 mph ENE | 77% | 0 | |
| 8 PM | Patchy rain nearby | 82° | 90° | 18% | 16 mph ENE | 79% | 0 | |
| 9 PM | Patchy rain nearby | 82° | 89° | 24% | 16 mph ENE | 79% | 0 | |
| 10 PM | Patchy rain nearby | 82° | 89° | 21% | 16 mph E | 78% | 0 | |
| 11 PM | Patchy rain nearby | 82° | 88° | 19% | 15 mph E | 78% | 0 |
San Juan hourly weather - Thursday, August 27
In San Juan, expect a high near 86°F (30°C) around 2 PM and a low of 80°F (27°C) near 4 AM; precipitation risk peaks at 34% around 5 AM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 81° | 87° | 21% | 14 mph E | 79% | 0 | |
| 1 AM | Patchy rain nearby | 81° | 87° | 21% | 14 mph E | 78% | 0 | |
| 2 AM | Patchy rain nearby | 81° | 87° | 23% | 14 mph E | 80% | 0 | |
| 3 AM | Patchy rain nearby | 81° | 86° | 26% | 14 mph E | 82% | 0 | |
| 4 AM | Patchy rain nearby | 80° | 85° | 33% | 13 mph E | 83% | 0 | |
| 5 AM | Patchy rain nearby | 81° | 86° | 34% | 12 mph E | 82% | 0 | |
| 6 AM | Patchy rain nearby | 80° | 86° | 24% | 12 mph E | 82% | 0 | |
| 7 AM | Patchy rain nearby | 81° | 86° | 30% | 11 mph ESE | 81% | 0 | |
| 8 AM | Patchy rain nearby | 83° | 89° | 26% | 9 mph ESE | 75% | 2 | |
| 9 AM | Patchy rain nearby | 84° | 92° | 23% | 10 mph E | 70% | 4 | |
| 10 AM | Patchy rain nearby | 85° | 92° | 15% | 14 mph E | 69% | 7 | |
| 11 AM | Patchy rain nearby | 85° | 93° | 17% | 15 mph E | 69% | 10 | |
| 12 PM | Patchy rain nearby | 86° | 93° | 17% | 15 mph ENE | 68% | 12 | |
| 1 PM | Sunny | 86° | 94° | 5% | 16 mph ENE | 67% | 12 | |
| 2 PM | Patchy rain nearby | 86° | 93° | 16% | 17 mph ENE | 66% | 10 | |
| 3 PM | Sunny | 86° | 93° | 4% | 17 mph E | 65% | 7 | |
| 4 PM | Sunny | 85° | 92° | 4% | 16 mph E | 66% | 4 | |
| 5 PM | Sunny | 85° | 91° | 5% | 15 mph E | 68% | 1 | |
| 6 PM | Sunny | 84° | 91° | 6% | 14 mph E | 72% | 0 | |
| 7 PM | Patchy rain nearby | 82° | 89° | 19% | 14 mph E | 76% | 0 | |
| 8 PM | Patchy rain nearby | 82° | 88° | 19% | 13 mph E | 78% | 0 | |
| 9 PM | Patchy rain nearby | 82° | 88° | 25% | 14 mph E | 80% | 0 | |
| 10 PM | Patchy rain nearby | 81° | 87° | 22% | 14 mph E | 81% | 0 | |
| 11 PM | Patchy rain nearby | 81° | 87° | 24% | 14 mph E | 81% | 0 |
San Juan hourly weather - Friday, August 28
In San Juan, expect a high near 87°F (30°C) around 2 PM and a low of 79°F (26°C) near 6 AM; precipitation risk peaks at 52% around 11 PM.
| Time | Conditions | Temp | Feels | Rain | Wind | Humidity | UV | |
|---|---|---|---|---|---|---|---|---|
| 12 AM | Patchy rain nearby | 81° | 86° | 23% | 15 mph E | 81% | 0 | |
| 1 AM | Patchy rain nearby | 81° | 86° | 32% | 14 mph E | 81% | 0 | |
| 2 AM | Patchy rain nearby | 81° | 86° | 15% | 14 mph ESE | 80% | 0 | |
| 3 AM | Patchy rain nearby | 80° | 85° | 23% | 13 mph ESE | 81% | 0 | |
| 4 AM | Patchy rain nearby | 80° | 84° | 23% | 13 mph ESE | 83% | 0 | |
| 5 AM | Patchy rain nearby | 80° | 84° | 24% | 13 mph ESE | 81% | 0 | |
| 6 AM | Clear | 79° | 83° | 10% | 12 mph ESE | 82% | 0 | |
| 7 AM | Patchy rain nearby | 80° | 85° | 22% | 11 mph ESE | 81% | 0 | |
| 8 AM | Light rain shower | 82° | 88° | 28% | 13 mph ESE | 78% | 1 | |
| 9 AM | Patchy rain nearby | 84° | 90° | 15% | 15 mph ESE | 69% | 6 | |
| 10 AM | Sunny | 85° | 90° | 4% | 16 mph E | 62% | 7 | |
| 11 AM | Patchy rain nearby | 86° | 92° | 14% | 17 mph E | 60% | 7 | |
| 12 PM | Sunny | 86° | 92° | 3% | 18 mph E | 59% | 8 | |
| 1 PM | Patchy rain nearby | 87° | 91° | 10% | 18 mph E | 58% | 7 | |
| 2 PM | Sunny | 87° | 92° | 3% | 18 mph E | 58% | 8 | |
| 3 PM | Sunny | 86° | 91° | 3% | 17 mph E | 58% | 8 | |
| 4 PM | Cloudy | 85° | 92° | 14% | 17 mph E | 66% | 6 | |
| 5 PM | Overcast | 84° | 90° | 16% | 16 mph E | 70% | 6 | |
| 6 PM | Overcast | 83° | 90° | 20% | 15 mph E | 75% | 6 | |
| 7 PM | Patchy rain nearby | 82° | 89° | 30% | 15 mph E | 80% | 0 | |
| 8 PM | Light rain shower | 82° | 89° | 38% | 16 mph E | 81% | 0 | |
| 9 PM | Patchy rain nearby | 81° | 87° | 34% | 15 mph E | 82% | 0 | |
| 10 PM | Light rain shower | 81° | 88° | 48% | 15 mph E | 82% | 0 | |
| 11 PM | Light rain shower | 81° | 87° | 52% | 14 mph E | 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 80°F (27°C) around 4 AM up to 86°F (30°C) near 2 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 34% around 5 AM. Wind picks up to 17 mph (27 km/h) from the ENE 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.