Travelling between Phitsanulok and Chiang Mai covers approximately 350 kilometres along Highway 11, linking two culturally significant cities in northern Thailand.
While transport operates year-round, seasonal conditions significantly influence comfort, scenery, air quality, and crowd levels. This guide provides clear, practical insight into weather patterns, festivals, and transport considerations to help you choose the ideal travel window.
Overview of the Route
- Distance: ~350 km
- By Bus: 4.5–5 hours | THB 260–400
- By Train: 7–8 hours | THB 120–1,300 (seat class dependent)
- By Car: 4.5–5 hours via Highway 11
- By Air (via Bangkok): 3–4 hours total travel time | from THB 2,200
Highway 11 is the primary overland corridor, generally well maintained and scenic, particularly during cooler months.
Cool Season (November–February)
Best Overall Travel Window
The cool, dry season is widely considered the most comfortable and visually rewarding time to travel.
Weather Conditions
- Chiang Mai: 15–30°C
- Phitsanulok: 19–33°C
- Rainfall: Typically under 40 mm per month
- Low humidity and clear skies
These conditions make long bus or train journeys more pleasant and offer clearer mountain views upon arrival.
Travel Experience
- Roads are dry and safe for self-driving.
- Mountain scenery appears crisp and green.
- Peak tourist season means higher demand for accommodation and transport.
This period also includes Yi Peng, Chiang Mai’s famous lantern festival, typically held in November alongside Loy Krathong. Expect increased hotel rates and advance booking requirements.
After arrival, many visitors head to Doi Inthanon, home to Thailand’s highest peak and iconic twin pagodas.
Planning Tip: Reserve transport and accommodation at least 2–4 weeks in advance during December and January.
Hot Season (March–May)
High Temperatures and Festival Energy
The hot season brings rising temperatures and occasional early rains toward May.
Weather Conditions
- Daytime highs: 35–37°C
- Rainfall: Increasing, up to 165 mm in May
- Dry heat, especially March–April
Travel remains fully operational, but midday journeys can feel uncomfortable.
Travel Considerations
- Choose early morning departures to avoid peak heat.
- Air-conditioned buses and trains provide relief.
- Visibility may be reduced during northern Thailand’s annual agricultural burning period (typically March–April), affecting air quality.
Mid-April features Songkran, Thailand’s New Year celebration, known for nationwide water festivities. Transport services operate normally but are in extremely high demand.
Planning Tip: Expect busy buses and trains during Songkran week; book early and allow additional travel time.
Rainy Season (June–October)
Lush Landscapes with Fewer Crowds
The monsoon period brings regular rainfall, especially from July to September.
Weather Conditions
- Chiang Mai: 24–33°C
- Rainfall: 137–226 mm per month
- 18–21 rainy days per month during peak monsoon
Rain typically falls in heavy afternoon showers rather than all-day downpours.
Travel Considerations
- Main highways remain open and well maintained.
- Rural mountain roads may become slippery.
- Fewer tourists mean easier seat availability.
- Landscapes are vibrant and green.
Bus and train fares remain stable year-round, but accommodation prices may drop slightly due to reduced demand.
Planning Tip: Monitor weather forecasts and allow flexibility in case of heavy downpours.
Seasonal Comparison Table
| Season | Phitsanulok High/Low (°C) | Chiang Mai High/Low (°C) | Rainfall (Chiang Mai mm) | Travel Conditions |
|---|---|---|---|---|
| Nov–Feb | 30–33 / 19–22 | 28–32 / 15–20 | 9–41 | Ideal weather; peak crowds |
| Mar–May | 35–37 / 24–26 | 34–35 / 20–25 | 15–165 | Very hot; festival season |
| Jun–Oct | 34 / 26 | 30–33 / 24 | 137–226 | Wet but scenic; fewer tourists |
When Should You Travel?
Choose November–February if:
- You prefer cooler temperatures.
- You want clear mountain views.
- You are visiting cultural festivals.
- Comfort is your top priority.
Choose March–May if:
- You plan around Songkran celebrations.
- You can tolerate heat.
- You prefer slightly fewer crowds outside April.
Choose June–October if:
- You enjoy lush scenery.
- You want a quieter travel experience.
- You are comfortable with occasional rain showers.
Final Recommendation
For most travellers, the cool season (November to February) offers the best balance of comfort, scenery, and festival atmosphere. However, each season presents distinct advantages depending on your tolerance for heat, rain, and crowds.
Selecting the right travel window ensures a smoother journey and a more enjoyable northern Thailand experience.
Frequently Asked Questions (FAQs)
1. What is the absolute best month to travel from Phitsanulok to Chiang Mai?
November and December typically offer the most pleasant weather with minimal rainfall and comfortable temperatures.
2. How long does the journey take by bus?
Most buses take between 4.5 and 5 hours, depending on traffic and departure time.
3. What is the cheapest transport option?
Third-class train tickets start from approximately THB 120, making rail the most budget-friendly option.
4. Is the route safe during the rainy season?
Yes, Highway 11 is well maintained. However, drivers should exercise caution during heavy rainfall.
5. Does air quality affect travel?
Air quality can decline during March and April due to seasonal agricultural burning in northern Thailand.
6. Are train tickets available year-round?
Yes, trains operate daily throughout the year, but peak-season tickets may sell out.
7. Is driving recommended?
Driving is straightforward via Highway 11, particularly during the cool season when road conditions are optimal.
8. Are festivals worth planning around?
Yes. Yi Peng in November and Songkran in April provide unique cultural experiences but require advance bookings.
9. Do prices change by season?
Transport fares remain relatively stable. Accommodation prices increase during peak cool season and major festivals.
10. Should I book transport in advance?
Advance booking is strongly recommended during November–February and during Songkran week in April.
For a Complete Travel Guide
For more detailed information on transportation options, booking tips, itinerary suggestions, and everything you need to know about planning your trip, visit our full guide:
