What is the weather like in San Jose in December?

Expect temperatures between 17°C and 24°C with 22% average rain probability and about 8 hours of sunshine daily.

What is the weather like in San Jose in December?

San Jose in December scores 63/100 based on 30 years of climate data. Good option with minor considerations.

Who should visit San Jose in December?

December in San Jose is ideal for: Outdoor enthusiasts, Cultural tourists, Honeymoon couples, Business travelers.

San Jose Weather in December | 30-Year Forecast

Avg High

24°C

Hottest around day 27

Avg Low

17°C

Coolest around day 4

Rainy Days

7days

22% avg rain chance

Sunshine

8hrs/day

Winter season

Essential Travel Info for San Jose

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

CRC

₡ Costa Rican colón

Language

Spanish

Driving

Right side

Connect

Cable TV channels have many American Eng...

Safety

High Safety

GPI: 1.732

Travel Intelligence

Exclusive flight analytics & health data for San Jose

Smart Flight Estimator

Airport-to-Airport Logistics

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Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Moderate

42/ 100

Traffic Index

Balanced traffic

Peak Daily Arrivals

slots per day

Peak

Nov

Low

Oct

Monthly Traffic Distribution

105

Jan

Feb

107

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

118

Nov

108

Dec

Traffic Level

Low Season

Key Connections

Tocumen (PTY)

Askona ()

Puerto Jimenez (PJM)

Guatemala City La Aurora (GUA)

Santa Clara El Salvador (SAL)

Health & Safety Advisory

CDC travel health recommendations

9 Recommendations

COVID-19

All eligible travelers should be up to date with their COVID-19 vaccines. Please seeYour COVID-19 Vaccinationfor more information.

Chikungunya

All travelers should take steps to prevent mosquito bites. Chikungunya vaccination is generally not recommended. Travelers who wish to consider vaccination can visit “What to consider before traveling” on thechikungunya vaccinespage to learn more.

Hepatitis A

Recommended for unvaccinated travelers one year old or older going to Costa Rica.Infants 6 to 11 months old should also be vaccinated against Hepatitis A. The dose does not count toward the routine 2-dose series.Travelers allergic to a vaccine component should receive a single dose of immune globulin, which provides effective protection for up to 2 months depending on dosage given.Unvaccinated travelers who are over 40 years old, are immunocompromised, or have chronic medical conditions planning to depart to a risk area in less than 2 weeks should get the initial dose of vaccine and at the same appointment receive immune globulin.

Hepatitis B

Recommended for unvaccinated travelers younger than 60 years old traveling to Costa Rica. Unvaccinated travelers 60 years and older may get vaccinated before traveling to Costa Rica.

Malaria

CDC recommends that travelers going to certain areas of Costa Rica take prescription medicine to prevent malaria. Depending on the medicine you take, you will need to start taking this medicine multiple days before your trip, as well as during and after your trip. Talk to your doctor about which malaria medication you should take.Transmission areasPresent in the provinces of Alajuela and LimónRare to no transmission in other parts of the countryDrug resistanceNoneSpeciesP. falciparum(86%)P. vivax(14%)Recommended chemoprophylaxisAlajuela and Limón Provinces: Atovaquone-proguanil, chloroquine, doxycycline, mefloquine, tafenoquine2All other areas: No chemoprophylaxis recommended (insect bite precautions and mosquito avoidance only)4Updated April 23, 2025See footnotes

Measles

Cases of measles are on the rise worldwide. Travelers are at risk of measles if they have not been fully vaccinated at least two weeks prior to departure, or have not had measles in the past, and travel internationally to areas where measles is spreading.All international travelers should be fully vaccinated against measles with the measles-mumps-rubella (MMR) vaccine, including an early dose for infants 6–11 months, according toCDC’s measles vaccination recommendations for international travel.

+3 more

Source: CDC Travelers' Health

View Complete Health Guide

Is December a Good Time to Visit San Jose?

👌Good option with minor considerations(63/100)

Short Answer

Popular December in San Jose offers 24°C and 22% rain chance - excellent conditions that attract maximum visitors. Book 3-6 months ahead for best rates.

Decision Factors

Vaccinations required

Yellow Fever

Seismically active region

18 earthquakes recorded in this month (30-year data)

Very high humidity

81% average humidity

Peak tourist season

92% of annual peak - expect crowds and peak prices

Ideal temperature range

24.3°C - perfect for sightseeing and outdoor activities

Health precautions needed

Be aware of: Leptospirosis, Melioidosis, Chagas disease (American Trypanosomiasis)

Good For

🥾
Outdoor enthusiasts
Ideal hiking conditions: 24.3°C, 22% rain chance
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 98/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

💰
Budget travelers
Peak season means premium prices everywhere
👴
Elderly travelers
81% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,San Jose in December averages 24°C with 22% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: San Jose in December

What are the temperatures in San Jose in December?

Daytime highs average 24°C, nights drop to 17°C. Temperatures remain fairly consistent.

How many rainy days in San Jose in December?

Expect around 7 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in San Jose in December?

Comfortable casual wear with a light jacket for evenings.

Is December peak season in San Jose?

This is typically peak season with higher prices. Book 2-3 months ahead.

San Jose Weather in December

San Jose December Weather Calendar