Thailand in December 2025
Cool and dry season - ideal weather for most activities. Discover the best destinations, weather outlook, and events happening this month.
Weather in December
Temperature
26°C
Min 20°C / Max 31°C
Rainfall
5mm
1 rainy days
Crowds
Peak
Peak prices
| Region | Temp | Rain | Humidity |
|---|---|---|---|
| Central Thailand | 26°C | 5mm | 66% |
| Northern Thailand | 21°C | 15mm | 62% |
| Southern Thailand | 27°C | 70mm | 77% |
| Isaan (Northeast) | 23°C | 5mm | 62% |
Travel Scores for December
Weather-based scores to help you decide if December is right for your trip type.
Best for sightseeing, temples, and outdoor activities
Best period: November - February
Best for swimming, sunbathing, and water activities
Best period: November - April (Andaman) / January - September (Gulf)
Humidity
66%
Feel
Comfortable
Pleasant conditions for most activities
Best Beaches in December
Thailand has two distinct coastlines with opposite monsoon patterns. Here's where to go for the best beach conditions.
Perfect beach weather. Excellent visibility for diving and snorkeling. All islands accessible.
Rainfall
50mm
Northeast monsoon brings heavy rain and rough seas. Ferry cancellations common. Avoid Koh Tao diving.
Rainfall
210mm
Prime season! World-class diving at Similan & Surin. Koh Lipe at its best.
Rainfall
60mm
- • Koh Tachai remains closed for environmental recovery
Destinations for December 2025
Based on weather conditions, crowd levels, and seasonal events
Top Picks for December
These destinations offer the best weather conditions, activities, and experiences during December. Plan your trip to one of these locations for an optimal Thailand experience.
Central Thailand
Temp
26°C
20-31°C
Rain
5mm
1 days
Sun
9hrs
daily avg
Humidity
66%
Why visit in December:
- Perfect temperatures for outdoor activities
- Minimal rainfall expected
- Comfortable humidity levels
Central Thailand
Temp
26°C
20-31°C
Rain
5mm
1 days
Sun
9hrs
daily avg
Humidity
66%
Why visit in December:
- Perfect temperatures for outdoor activities
- Minimal rainfall expected
- Comfortable humidity levels
Events this month:
- Pattaya International Fireworks Festival - November/December
Central Thailand
Temp
26°C
20-31°C
Rain
5mm
1 days
Sun
9hrs
daily avg
Humidity
66%
Why visit in December:
- Perfect temperatures for outdoor activities
- Minimal rainfall expected
- Comfortable humidity levels
Events this month:
- Ayutthaya World Heritage Fair - December
Northern Thailand
Temp
21°C
14-29°C
Rain
15mm
2 days
Sun
9hrs
daily avg
Humidity
62%
Why visit in December:
- Cooler temperatures - great for hiking and temples
- Minimal rainfall expected
- Comfortable humidity levels
Southern Thailand
Temp
27°C
23-31°C
Rain
70mm
8 days
Sun
7hrs
daily avg
Humidity
77%
Why visit in December:
- Perfect temperatures for outdoor activities
Events & Festivals in December
HM The King's Birthday / Father's Day
5 December
National holiday honoring King Bhumibol (Rama IX) and celebrating Father's Day. Yellow decorations and lights adorn the city.
Constitution Day
10 December
National holiday commemorating Thailand's first constitution in 1932.
New Year's Eve Countdown
31 December
Major countdown celebrations throughout Thailand with fireworks, concerts, and festivities.
- Lightweight, breathable clothing
- Comfortable walking shoes
- Sunscreen (SPF 30+) and sunglasses
- Reusable water bottle
- Light jacket or cardigan for cooler evenings
- Long pants for temple visits
- Book accommodation in advance, especially during holidays
- Perfect weather for outdoor activities - plan your itinerary accordingly
- Northern Thailand can be chilly at night - pack layers
- Book popular tours and restaurants well in advance
- Expect higher prices and longer queues at attractions
- Book Christmas and New Year stays early - peak season begins
Accommodation
+50%
Book early for best rates
Flights
High
Consider flexible dates
Tours & Activities
Book Ahead
Popular tours fill up fast
Frequently Asked Questions about December
Explore Other Months
Ready to Explore Thailand in December?
Check out our destination guides and start planning your trip.