Ob Luang National Park

National Park

Ob Luang National Park protects a deep river gorge cut through layered rock, short hiking trails and archaeological sites; visitors come for day hikes, river scenery and picnic spots west of Chiang Mai.

Ob Luang National Park
18.3200, 98.3500
Daily 8:00am-4:30pm (typical park office hours)
200 THB (~$6) for foreign adults; 40 THB (~$1.2) for Thai adults (standard Department of National Parks rates)

Tips for Visiting Ob Luang National Park #

  • Plan to arrive at the park gates early (before 8:30 a.m.) to enjoy the canyon in softer light, cooler temperatures and with far fewer visitors than midday.
  • Use the park's main visitor centre/entrance to register and pick up a map; rangers can advise on which short trails and viewpoints are open that day.
  • If you want quieter viewpoints, hike the lesser-used side trails indicated on the visitor-centre map rather than staying at the main picnic areas, and visit on a weekday or outside Thai public holidays.

Best Time to Visit Ob Luang National Park #

Visit Ob Luang in the cool, dry months (November-February) for the most comfortable weather and clear canyon views.

Cool / dry season
November-February · ~15-28°C
Best time to visit for comfortable trekking, clear skies and lower river levels - ideal for viewpoints and canyon walks.
Hot season
March-May · ~25-38°C
Hot, often very humid; daytime heat can make long hikes uncomfortable and water stations are important.
Rainy season
May-October · ~22-32°C
Frequent heavy showers and swollen streams can make trails slippery and some rivers or side trails impassable.

Weather & Climate near Ob Luang National Park #

Climate

Ob Luang National Park's climate is classified as Tropical Savanna - Tropical Savanna climate with hot summers (peaking in April) and mild winters (coldest in January). Temperatures range from 11°C to 34°C. Abundant rainfall (1021 mm/year), wettest in September with a pronounced dry season.

Air Quality: AQI 75 Moderate
Best Time to Visit
FebruaryJanuaryDecember
Temperature & Rainfall
Temperature Range
39°
Warmest Month
Coldest Month
Monthly Conditions

January

January is mild with highs of 27°C and lows of 11°C. The driest month with just 2 mm and mostly sunny skies.

93 Ideal

Comfort

19°
Feels Like Mild
19°C
Temperature
11° 27°
68%
Humidity
Humid

Weather

2 mm
Rainfall
0.7 m/s
Wind
Calm
1.4
UV Index
High
11.0h daylight

February

February is mild with highs of 31°C and lows of 13°C. Light rainfall and mostly sunny skies.

97 Ideal

Comfort

22°
Feels Like Mild
22°C
Temperature
13° 31°
57%
Humidity
Humid

Weather

11 mm
Rainfall
1.0 m/s
Wind
Calm
1.7
UV Index
Very High
11.4h daylight

March

March is warm with highs of 34°C and lows of 16°C. Light rainfall and mostly sunny skies.

85 Excellent

Comfort

25°
Feels Like Warm
25°C
Temperature
16° 34°
56%
Humidity
Humid

Weather

18 mm
Rainfall
1.2 m/s
Wind
Calm
1.9
UV Index
Very High
11.9h daylight

April

April is the warmest month with highs of 34°C and lows of 20°C. Moderate rainfall (60 mm).

77 Very Good

Comfort

27°
Feels Like Warm
27°C
Temperature
20° 34°
59%
Humidity
Humid

Weather

60 mm
Rainfall
1.3 m/s
Wind
Calm
2.1
UV Index
Extreme
12.4h daylight

May

May is warm with highs of 31°C and lows of 20°C. Significant rainfall (170 mm) and mostly overcast skies.

67 Good

Comfort

26°
Feels Like Warm
26°C
Temperature
21° 31°
77%
Humidity
Very Humid

Weather

170 mm
Rainfall
1.4 m/s
Wind
Calm
2.1
UV Index
Extreme
12.9h daylight

June

June is warm with highs of 29°C and lows of 20°C. Significant rainfall (110 mm) and mostly overcast skies.

69 Good

Comfort

25°
Feels Like Warm
25°C
Temperature
21° 29°
84%
Humidity
Very Humid

Weather

110 mm
Rainfall
1.3 m/s
Wind
Calm
1.9
UV Index
Very High
13.1h daylight

July

July is warm with highs of 28°C and lows of 20°C. Significant rainfall (129 mm) and mostly overcast skies.

67 Good

Comfort

24°
Feels Like Warm
24°C
Temperature
20° 28°
86%
Humidity
Very Humid

Weather

129 mm
Rainfall
1.2 m/s
Wind
Calm
1.9
UV Index
Very High
13.0h daylight

August

August is mild with highs of 28°C and lows of 20°C. Significant rainfall (171 mm) and mostly overcast skies.

65 Good

Comfort

24°
Feels Like Mild
24°C
Temperature
20° 28°
88%
Humidity
Very Humid

Weather

171 mm
Rainfall
1.0 m/s
Wind
Calm
1.8
UV Index
Very High
12.6h daylight

September

September is mild with highs of 28°C and lows of 20°C. The wettest month with heavy rain (176 mm) and mostly overcast skies.

65 Good

Comfort

24°
Feels Like Mild
24°C
Temperature
20° 28°
89%
Humidity
Very Humid

Weather

176 mm
Rainfall
0.8 m/s
Wind
Calm
1.8
UV Index
Very High
12.1h daylight

October

October is mild with highs of 28°C and lows of 19°C. Significant rainfall (128 mm) and mostly overcast skies.

69 Good

Comfort

23°
Feels Like Mild
23°C
Temperature
19° 28°
87%
Humidity
Very Humid

Weather

128 mm
Rainfall
0.8 m/s
Wind
Calm
1.6
UV Index
Very High
11.6h daylight

November

November is mild with highs of 27°C and lows of 16°C. Moderate rainfall (39 mm).

89 Excellent

Comfort

22°
Feels Like Mild
22°C
Temperature
16° 27°
82%
Humidity
Very Humid

Weather

39 mm
Rainfall
0.8 m/s
Wind
Calm
1.5
UV Index
Very High
11.2h daylight

December

December is mild with highs of 26°C and lows of 12°C. Almost no rain and mostly sunny skies.

93 Ideal

Comfort

19°
Feels Like Mild
19°C
Temperature
13° 26°
76%
Humidity
Very Humid

Weather

7 mm
Rainfall
0.8 m/s
Wind
Calm
1.4
UV Index
High
10.9h daylight

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