Climate guide for Khao Sok National Park, Thailand

Best Time to Visit
Khao Sok National Park

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01 · Thailand

About Khao Sok National Park

Khao Sok is southern Thailand's ancient rainforest of Cheow Lan lake floating bungalows and hornbill calls. In Thailand, the drier months outside peak monsoon usually delivers the most reliable conditions for nature travel - then use monthly climate scores to fine-tune around crowds, storms, or snow depth.

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Did you know?

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Travel Tips

01Best time & timing
The strongest months are January, February, March: January peaks at 7.5/10, while November drops to 3.9/10.
02Weather & what to pack
25°C and 49 mm of rain shape a typical January here. Pack trail shoes, a rain layer and more water than feels necessary.
03Budget timing
The lowest rates fall in February; treat it as a budget pick rather than a weather pick (6.2/10).

Things to do in Khao Sok National Park

Khao Sok National Park, Thailand. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Khao Sok National Park: the short answer

The best time to visit Khao Sok National Park is January, followed by February, March. Those months combine the most usable temperatures with the fewest lost days to rain: January averages 25°C with 49 mm of rain and about 22 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are November, July.

Across the year Khao Sok National Park swings from 25°C in January to 28°C in April, a 4-degree spread, while rainfall ranges from 49 mm in January to 407 mm in September. That is the whole planning problem in one sentence: Khao Sok National Park is not equally good year-round, and the difference between the best and worst month here is 3.6 points on a 10-point scale.

Warmest month: April (28°C). Coolest: January (25°C). Driest: January (49 mm). Wettest: September (407 mm).

Khao Sok National Park month by month

January: the best month of the year in Khao Sok National Park

Best window · 7.5/10

January averages 25°C (76°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

Rainfall runs 49 mm, so plan one flexible day in three; you still get about 22 days with 6+ hours of sunshine and 11.5 hours of daylight.

On our climate-comfort scale this is the top-ranked month of the year for Khao Sok National Park at 7.5/10 — the reference point every other month on this page is measured against.

Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection, a packable rain layer, footwear you can get muddy.

February in Khao Sok National Park: mixed conditions, plan around the weather

Trade-offs · 6.2/10

February averages 25°C (77°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

Monthly rainfall reaches 106 mm — wet for this destination — but about 24 days with 6+ hours of sunshine still break through, so keep one indoor fallback in the plan.

It scores 6.2/10 here, 2nd of 12 months, against 7.5/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

March in Khao Sok National Park — workable with trade-offs

Trade-offs · 6.2/10

Days in March average 26°C (79°F) and humidity near 83% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

Budget for roughly 85 mm of rain this month — a flexible day or two helps — with about 29 days with 6+ hours of sunshine and 11.9 hours of daylight to work around it.

That is 6.2/10 on the same scale — 3rd of 12 months, versus 7.5/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer, footwear you can get muddy.

April in Khao Sok National Park — middling scores, decent value

Trade-offs · 5.5/10

April averages 28°C (83°F) and humidity near 76%, so the practical pattern is early mornings, a long midday break, and evenings back outside.

Rainfall runs 94 mm, so plan one flexible day in three; you still get about 28 days with 6+ hours of sunshine and 12.2 hours of daylight.

It scores 5.5/10 here, 4th of 12 months, against 7.5/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a packable rain layer, footwear you can get muddy.

Flexible dates? January scores 2 points higher here — enough to change the trip.

May in Khao Sok National Park — the hardest end of the year

Hardest · 4/10

Days in May average 27°C (81°F) and humidity near 86% — front-load outdoor plans before the heat builds and treat the middle of the day as indoor time.

This is the year's wettest stretch at 320 mm, but with about 20 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 4/10 on the same scale — 10th of 12 months, versus 7.5/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack the lightest breathable clothing you own, a hat, and more water than feels necessary, a proper rain shell rather than an umbrella, footwear you can get muddy.

If your dates are flexible, January is materially better in Khao Sok National Park — 3.5 points higher on the same scale.

June in Khao Sok National Park — the hardest end of the year

Hardest · 4.5/10

June averages 26°C (78°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

224 mm of rain puts this in monsoon territory — about 19 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.

It scores 4.5/10 here, 6th of 12 months, against 7.5/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination. That combination — decent conditions at the lowest rates of the year — is the best value window on this page.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

Flexible dates? January scores 3 points higher here — enough to change the trip.

July in Khao Sok National Park: expect compromises

Hardest · 4/10

July averages 26°C (78°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

361 mm of rain puts this in monsoon territory — about 15 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.

It scores 4/10 here, 11th of 12 months, against 7.5/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

Flexible dates? January scores 3.5 points higher here — enough to change the trip.

August in Khao Sok National Park — the hardest end of the year

Hardest · 4.5/10

Trail conditions at 26°C (78°F) favour early starts and shaded routes in August; midday is for water breaks, not for exposed climbs.

This is the year's wettest stretch at 265 mm, but with about 20 days with 6+ hours of sunshine it is not a total loss; an indoor fallback covers the risk.

That is 4.5/10 on the same scale — 7th of 12 months, versus 7.5/10 for the best month here.

Expect low-season pricing, and crowds are moderate.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

If your dates are flexible, January is materially better in Khao Sok National Park — 3 points higher on the same scale.

September in Khao Sok National Park: expect compromises

Hardest · 4.1/10

Trail conditions at 25°C (77°F) favour early starts and shaded routes in September; midday is for water breaks, not for exposed climbs.

Expect monsoon-level rainfall at 407 mm: only about 15 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.

That is 4.1/10 on the same scale — 9th of 12 months, versus 7.5/10 for the best month here.

Budget for low-season pricing, and crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

If your dates are flexible, January is materially better in Khao Sok National Park — 3.4 points higher on the same scale.

October in Khao Sok National Park — off-season conditions

Hardest · 4.2/10

October averages 25°C (78°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

378 mm of rain puts this in monsoon territory — about 17 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.

It scores 4.2/10 here, 8th of 12 months, against 7.5/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

Flexible dates? January scores 3.3 points higher here — enough to change the trip.

November in Khao Sok National Park — off-season conditions

Hardest · 3.9/10

November averages 25°C (77°F) — warm for the outdoors: start trails early, use shaded routes at midday, and carry more water than you think you need.

312 mm of rain puts this in monsoon territory — about 14 days with 6+ hours of sunshine across the whole month, and multi-day washouts are normal.

It scores 3.9/10 here, 12th of 12 months, against 7.5/10 in the destination's best month.

Plan for low-season pricing, with crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

Flexible dates? January scores 3.6 points higher here — enough to change the trip.

December in Khao Sok National Park — off-season conditions

Hardest · 4.6/10

Trail conditions at 25°C (76°F) favour early starts and shaded routes in December; midday is for water breaks, not for exposed climbs.

Expect monsoon-level rainfall at 202 mm: only about 15 days with 6+ hours of sunshine across the month, and stretches of heavy rain are normal.

That is 4.6/10 on the same scale — 5th of 12 months, versus 7.5/10 for the best month here.

Budget for mid-season pricing, and crowds are light for this destination.

Pack light clothing, a hat and real sun protection, a proper rain shell rather than an umbrella, footwear you can get muddy.

If your dates are flexible, January is materially better in Khao Sok National Park — 2.9 points higher on the same scale.

FAQ

Frequently asked

When is the best time to visit Khao Sok National Park, Thailand?
In Ideal Weather mode, the best months to visit Khao Sok National Park are January. January is the single peak month with an Ideal Weather score of 7.5/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Khao Sok National Park year-round?
Khao Sok National Park has a climate profile suited to nature and wildlife travel. Average monthly temperatures range from 25°C in January to 28°C in April, with Ideal Weather scores between 3.9 and 7.5 out of 10.
Which months should I avoid in Khao Sok National Park?
The lowest Ideal Weather-scoring months in Khao Sok National Park are November (3.9/10), May (4.0/10), July (4.0/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Khao Sok National Park?
September is the wettest month in Khao Sok National Park, averaging about 407 mm of rainfall. January is the driest, at roughly 49 mm.
Which is the sunniest month in Khao Sok National Park?
March sees the most sun in Khao Sok National Park, with about 29 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Khao Sok National Park a good destination for nature and wildlife travel?
Khao Sok National Park is well suited to nature and wildlife travel. Its highest Ideal Weather window (January) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Khao Sok National Park calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Khao Sok National Park: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for nature and wildlife travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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Curated in Khao Sok National Park

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