Mexico, Central America and the Caribbean · Puerto Rico
Cheap flights to San Juan
Old San Juan's colourful streets and forts, with beaches and El Yunque rainforest nearby.
- Best weather
- Dec to Apr
- Warmest
- Sep, 32°C
- Airport
- SJU
Best time to visit San Juan
The best time to visit San Juan for the weather is from December to April, when daytime highs average 28 to 30°C (82 to 86°F) and there's some rain.
There's no real wet season: rain is spread through the year, with the most in November (about 14 rainy days) and the least in March.
The warmest month is September, with highs around 32°C (89°F); the coolest is January, at around 28°C (83°F) by day and 22°C (72°F) at night.
San Juan weather by month
Average daytime highs, overnight lows and rain for each month.
| Month | High | Low | Rain | What it's like |
|---|---|---|---|---|
| January Best | 28°C 83°F | 22°C 72°F | 12 rainy days | Warm with some rain |
| February Best | 29°C 84°F | 22°C 72°F | 10 rainy days | Warm with some rain |
| March Best | 29°C 85°F | 22°C 72°F | 10 rainy days | Warm with some rain |
| April Best | 30°C 86°F | 23°C 74°F | 12 rainy days | Hot with some rain |
| May | 31°C 87°F | 24°C 76°F | 14 rainy days | Hot and wet |
| June | 32°C 89°F | 25°C 77°F | 15 rainy days | Hot and wet |
| July | 32°C 89°F | 25°C 78°F | 15 rainy days | Hot and wet |
| August | 32°C 89°F | 25°C 78°F | 15 rainy days | Hot and wet |
| September | 32°C 89°F | 25°C 78°F | 16 rainy days | Hot and wet |
| October | 31°C 89°F | 25°C 77°F | 15 rainy days | Hot and wet |
| November | 30°C 86°F | 24°C 75°F | 14 rainy days | Hot and wet |
| December Best | 29°C 84°F | 23°C 73°F | 13 rainy days | Warm and wet |
Long-term averages from San Juan, Puerto Rico (Luis Muñoz Marín International Airport), 1991–2020. The weather on your dates will vary.
Flying to San Juan
Farepop finds fares to Luis Munoz Marin International Airport (SJU). These are the closest airports Farepop watches in each region, as the crow flies; with stops, the trip is longer.
| From | Closest airports |
|---|---|
| Australia | Brisbane 15,900 km · about 20.5 hours non-stop Sydney 16,000 km · about 20.5 hours non-stop |
| New Zealand | Wellington 13,800 km · about 17.5 hours non-stop Auckland 13,800 km · about 17.5 hours non-stop |
| United States | Miami 1,000 mi · about 2.5 hours non-stop Atlanta 1,500 mi · about 3.5 hours non-stop |
| Canada | Toronto 3,100 km · about 4.5 hours non-stop Montréal 3,100 km · about 4.5 hours non-stop |
| United Kingdom | Belfast 4,000 mi · about 8.5 hours non-stop Glasgow 4,100 mi · about 8.5 hours non-stop |
| Europe | Lisbon 5,900 km · about 8 hours non-stop Porto 6,000 km · about 8 hours non-stop |
How Farepop finds cheap flights to San Juan
Compared with the usual price
Every fare is compared with what the same route usually costs for the same trip length and dates. Around busy holidays we use quieter neighbouring months, so a peak price never passes for a saving.
At least 25% below
A deal is at least 25% below the usual price for those dates, and a good fare at least 20%. Full-service airlines selling at budget prices, and travel agents undercutting the airline, are labelled as such.
Checked twice, then again
Fares are checked again on their exact dates before you hear about them, and regularly after. Ones that no longer qualify are withdrawn.
You book direct
Farepop doesn't sell tickets. Tap a deal and book with the airline or travel site; always check the final price, baggage and conditions before you pay.
The full rules are in our savings methodology.
San Juan: questions
When is the best time to visit San Juan?
For the weather, from December to April, when daytime highs average around 29°C. These are long-term averages from San Juan, Puerto Rico (Luis Muñoz Marín International Airport), 1991–2020.
Does it rain a lot in San Juan?
San Juan has no distinct wet season. November is usually the wettest month, with about 14 rainy days.
Which airport do you fly into for San Juan?
Farepop finds fares to Luis Munoz Marin International Airport (SJU).
How can I find cheap flights to San Juan?
Be flexible with your dates and let the fares come to you. Farepop watches flights from your home airports and alerts you when a trip to San Juan costs at least 25% less than it usually does for those dates, so you can book before the fare goes.
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