Puerto Rico San Juan Weather in October — Climate Guide
October in San Juan is moderate
October is moderate for San Juan.
October is hurricane season tail — first half (Oct 1-19) still peak risk, second half (Oct 20-31) sees rapid risk reduction. Sargassum begins tapering. Beach cleaning crews catch up. By month-end, conditions transition toward dry-season recovery.
Hotel pricing remains at September lows through mid-October, then climbs sharply November 1. Smart-money window: Oct 20-31 — improving weather + still-low pricing + lower hurricane risk + Halloween preparations (US-influenced bar scene in Condado + La Placita Santurce).
Travel score
Hurricane tail + last affordable month + Halloween bar scene
October Weather at a Glance
October averages 88°F / 31°C highs and 75°F / 24°C lows with 13 rainy days and 165mm rainfall. Humidity 80%. UV 9. Sunshine 7 hours. Sea 29°C still warm. Hurricane risk drops sharply after Oct 20. Sargassum tapering.
October Travel Advice
Target Oct 20-31 for best value + improving weather + lower hurricane risk combo. Travel insurance still essential first half. Halloween bar scene Condado + La Placita Santurce Oct 31. Hotel pricing climbs sharply November 1 — book Oct for value.
Flying In from Overseas
Tourist arrivals still low. Direct flights from NYC $250-450, Boston $250-450, Toronto $400-650. European autumn travel begins. Korean + Japanese autumn break partial overlap.
October Pricing Trends
Last affordable month: Condado oceanfront 4-star $150-280/night first half, $200-380 late month. La Concha + Condado Vanderbilt $200-450. Pricing climbs +30-40% November 1.
San Juan October Weather Stats
Avg High
31°C
Avg Low
24°C
Rainy Days
13
165mm total
Sunshine
7h
Daily avg
Humidity
80%
very-humid
UV Index
9
Very high
Wind
18 km/h
Gusts 32
Sea Temp
29°C
swimming-warm
Crowds
Quiet
At attractions
October Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
35 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
25°C
Humidity and wind affect how the actual temperature feels.
Wind
18 km/h
Max gust 32 km/h
Activities Recommended for October
October Travel Pros & Cons
Pros
- Hurricane risk dropping after Oct 20
- Last affordable month before peak
- Sargassum tapering
- Sea 29°C still warm
- Halloween bar scene Condado + La Placita
Cons
- First-half still hurricane risk
- Still wet (13 rainy days)
- Sargassum residual
- Columbus Day discussions mixed reception
October Events & Festivals
- Hurricane tail (lower risk after Oct 20)
- Sargassum tapering
- Columbus Day / Día de la Raza (Oct 12 — federal holiday)
- Halloween prep late October (US-influenced)
San Juan in October — Full Picture
October is hurricane season tail — first half (Oct 1-19) still peak risk, second half (Oct 20-31) sees rapid risk reduction. Sargassum begins tapering. Beach cleaning crews catch up. By month-end, conditions transition toward dry-season recovery.
Hotel pricing remains at September lows through mid-October, then climbs sharply November 1. Smart-money window: Oct 20-31 — improving weather + still-low pricing + lower hurricane risk + Halloween preparations (US-influenced bar scene in Condado + La Placita Santurce).
Columbus Day / Día de la Raza (Oct 12) is a US federal holiday but mixed reception in PR (Latin American identity discussions). Last affordable month before November dry-season recovery + Christmas peak prep.
What to Wear & What to Pack
Hot tail + wet — quick-dry, light rain jacket, SPF 50+. Mosquito repellent. Sandals for wet beach. Hurricane prep still essential first half.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
30°C
22°C
7.7/mo
Summer (Jun·Jul·Aug)
32°C
24°C
11.7/mo
Autumn (Sep·Oct·Nov)
Current31°C
23.3°C
12.3/mo
Winter (Dec·Jan·Feb)
28°C
21°C
8.3/mo
San Juan Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 28° | 21° | 8d·75mm | 7h | 76% | 9 | Very busy | Peak |
| February (Best) | 28° | 21° | 7d·65mm | 8h | 75% | 10 | Very busy | Peak |
| March (Best) | 29° | 21° | 6d·55mm | 8h | 74% | 11 | Very busy | Peak |
| April (Best) | 30° | 22° | 7d·100mm | 8h | 75% | 11 | Busy | Shoulder |
| 31° | 23° | 10d·150mm | 8h | 76% | 12 | Moderate | Shoulder | |
| 32° | 24° | 11d·130mm | 8h | 78% | 12 | Moderate | Shoulder | |
| 32° | 24° | 12d·130mm | 8h | 78% | 12 | Busy | Peak | |
| 32° | 24° | 12d·150mm | 7h | 79% | 11 | Moderate | Shoulder | |
| 32° | 24° | 13d·160mm | 7h | 80% | 10 | Quiet | Low season | |
| 31° | 24° | 13d·165mm | 7h | 80% | 9 | Quiet | Low season | |
| November (Best) | 30° | 22° | 11d·140mm | 7h | 78% | 8 | Moderate | Shoulder |
| December (Best) | 28° | 21° | 10d·110mm | 7h | 77% | 8 | Very busy | Peak |
View Other Months
San Juan October Hotel Picks
Frequently Asked Questions
Is October a good time to visit San Juan?
San Juan in October is moderate. Tourist crowds are quiet and flight/hotel prices are low season.
What's the average temperature in San Juan in October?
San Juan October averages a high of 31°C and a low of 24°C.
Does it rain much in San Juan in October?
San Juan October averages 165mm of rainfall over about 13 rainy days.
What should I wear in San Juan in October?
Hot tail + wet — quick-dry, light rain jacket, SPF 50+. Mosquito repellent. Sandals for wet beach. Hurricane prep still essential first half.
What time are sunrise and sunset in San Juan in October?
San Juan October sunrise is 06:30 and sunset is 18:00, with 11h 30min of daylight.
What's the air quality like in San Juan in October?
San Juan October air quality (AQI) averages 50, rated Good. PM2.5 averages 20μg/m³.
What activities are recommended in San Juan in October?
In October, San Juan is great for Hotel pool + spa, Bacardí distillery tour, Old San Juan museums.
Is October peak season in San Juan?
San Juan October crowds are quiet and prices are low season. You can travel relatively comfortably without long queues.
Best Months to Visit San Juan
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.