Weather in Phuket 🇹🇭
Monthly weather averages & travel planning
August
Avg Temp
28°C
Rain Days
24 days
Sun Hours
9 hrs
Humidity
82%
Asia › 🇹🇭 Thailand › Phuket
Updated: March 2026
Is August a Good Time to Visit Phuket?
5/10
Fair
August is a fair time to visit Phuket (5/10). With 9 daily sunshine hours and only 24 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 9th sunniest of the year in Phuket. Culture-focused travellers and those who prefer lighter crowds will find August a practical choice, with prices running lower than peak January without sacrificing all the good weather. September offers a similar profile at lower hotel rates if dates are flexible. Watch out for prolonged rain stretches: with 24 wet days, a fully outdoor itinerary is risky. Build in museum days and covered market visits as contingency. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
vs July:29°C avg high
Based on 30-year climate normals (1991 to 2020), August in Phuket averages 28°C by day and 26°C overnight, a range that places it firmly in the warmer tier of the annual calendar. The month records approximately 9 sunshine hours per day and 264mm of total rainfall across 24 wet days, giving it a sunshine-to-rain ratio that is broadly workable for most itineraries.
28°C
82°F
Avg High
26°C
79°F
Avg Low
24 days
264 mm total
Rain Days
9h
per day avg
Sunshine
82%
Humid
Humidity
Temperature in Phuket in August
The narrow 2°C gap between daytime and overnight temperatures, characteristic of coastal cities with maritime moderation, means a single mid-layer works across the whole day. At 82% humidity, the 28°C daytime high feels 2-4°C warmer in practice: quick-dry fabrics and shade-seeking between noon and 3pm are the sensible response. UV index averages 8 this month, classed as high to very high. SPF 30+ sunscreen, a brim hat, and sunglasses are not optional between 10am and 4pm. Wind averages 23 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 82°F average high, 79°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Temperature Trends
High
Low
Rainfall (mm)
0-20 mm21-50 mm51-100 mm100+ mm
What to Wear in Phuket in August
Morning26°CBefore the day warms up
Afternoon28°CPeak daytime temperature
Evening29°CAfter sunset cools down
Packing for Phuket in August means dressing for 28°C days and 26°C evenings. A light cotton tee with a casual overshirt works well at 28°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 26°C, a modest 2°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. With 24 rain days expected, a compact travel umbrella is worth the bag space. A waterproof jacket is better than an umbrella if you plan full-day outdoor routes. For temple and religious site visits, carry a lightweight scarf or sarong to cover shoulders and knees, required at most major sites across the region. At 82% average humidity, quick-dry synthetic or bamboo fabrics dry overnight and stay comfortable longer than cotton.
Local tip: Temple and religious site visits require covered shoulders and knees in most of Phuket's heritage areas. A lightweight scarf or sarong weighs almost nothing and solves the problem instantly.
Events in Phuket in August
August has no major festivals or public holidays in Phuket, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
What to Pack for Phuket in August
Based on 28°C average highs and 24 rainy days
- Light layers for morning and evening
- Breathable T-shirts and comfortable trousers
- UV-protective sunglasses
- Quick-dry travel towel
- Anti-chafe balm for long walking days
- Moisture-wicking synthetic fabrics for active days
- Compact folding umbrella
- Waterproof outer layer or packable rain jacket
- Quick-dry clothing that recovers fast after a shower
- SPF 30+ sunscreen
- Comfortable walking shoes (a second pair lets the first air out overnight)
- Universal travel adapter
- Small day pack for city exploration
- Reusable water bottle
Best Activities in Phuket in August
- Explore outdoor markets and street food stallsMid-morning (10am-12pm)At 28°C, the temperature is ideal for extended walking without overheating
- Guided walking tour of the historic centreMorning or late afternoonComfortable temperatures allow several hours on foot without fatigue
- Visit rooftop viewpoints and observation decksGolden hour (1 hour before sunset)Warm clear evenings provide exceptional visibility for panoramic photography
- Day trip to the surrounding countryside or coastFull day (depart by 8am)August is reliably dry enough for rural day trips without weather risk
- Spend a morning in the national or city art museumOpens at 10am; arrive earlyWith 24 rain days expected, having a full-day indoor plan is practical insurance
- Cooking class focused on regional cuisineHalf-day sessions run 10am-1pm or 3-6pmIndoor activity that fills a rainy half-day with genuine cultural content
- Visit covered historical sites: cathedral, palace, or bazaarAny time; most crowded middayRoofed monuments and covered markets provide exploration without weather exposure
- Visit the main botanical garden or city park at seasonal peakYear-round; best light in morningAugust brings distinct seasonal changes to public green spaces worth exploring
- Seek out chilled local specialities: cold-brew tea, ice desserts, or chilled seafood at street-level stallsAny time; most atmospheric in evening marketsHot-weather street food culture peaks in August, with vendors setting up specifically for warm evenings
Why is Phuket warm in August?
Phuket's August climate is governed by the Inter-Tropical Convergence Zone (ITCZ), which draws moisture-laden trade winds across the region, producing the characteristic wet season rainfall of warm tropical cities. Daytime heat peaks around 28°C, moderated slightly by afternoon convective showers. Overnight temperatures remain warm at 26°C because the humid air retains heat effectively. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Frequently Asked Questions
Phuket in August
In August, Phuket experiences average highs of 28°C (82°F) and lows of 26°C (79°F). Expect around 24 rainy days and 9 hours of sunshine per day, with humidity averaging 82%. The 2°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 8, so sun protection is advisable on clear days.
Phuket typically sees 24 rainy days in August, with total precipitation of around 264mm. This is a notably wet period. A waterproof jacket or compact umbrella is essential, and it is worth building indoor alternatives into your daily itinerary for the inevitable rainy stretches. For context, the driest month in Phuket typically sees 4-6 fewer rain days than August.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Phuket in August. Daytime temperatures of 28°C are pleasant, but the evening drop to 26°C means a jacket is essential if you plan to be out after dark. With 24 rainy days, bring a compact umbrella or waterproof jacket for unexpected showers. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
August is a reasonable time to visit Phuket. Expect 24 rainy days, so pack a light rain layer for flexibility. Average temperatures of 28°C make outdoor exploration comfortable during the dry periods. With 9 daily sunshine hours, there are reliable windows of good weather to plan outdoor activities around, even if the month is not the driest on the calendar.
The average high temperature in Phuket in August is 28°C (82°F), and the average low is 26°C (79°F). The mean daily temperature is approximately 27°C (81°F). The day-to-night range of 2°C is narrow, typical of coastal or maritime cities. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Phuket is generally January. January offers the most sunshine at 11 hours per day and only 7 rainy days. Average temperatures reach 29°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around January gives you the best chance of dry, bright weather.
August is shoulder or low season in Phuket, meaning fewer tourists and generally lower prices than peak months. With 9 sunshine hours and 24 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In August, Phuket suits a range of activities thanks to mild temperatures around 28°C. With frequent rain, indoor activities and covered attractions are a smart choice. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 9 hours of sunshine, parks and waterfront walks are particularly enjoyable.
August ranks 9th sunniest of the year in Phuket, with an average 9 daily sunshine hours. The driest months are February, January, and March. March is the hottest month (30°C avg high); August is the coolest (28°C). From here, temperatures fall 0°C into September. Compared to last month (July: 29°C high, 24 rain days), August is cooler and equally dry. August sits in the middle of the annual sunshine ranking for Phuket, offering a reasonable balance of good weather and manageable crowds.
Year-Round Climate
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 29°C | 25°C | 7 | 11h | View |
| February | 29°C | 26°C | 4 | 11h | View |
| March | 30°C | 26°C | 11 | 11h | View |
| April | 30°C | 27°C | 18 | 11h | View |
| May | 29°C | 27°C | 25 | 10h | View |
| June | 29°C | 26°C | 23 | 10h | View |
| July | 29°C | 26°C | 24 | 9h | View |
| August | 28°C | 26°C | 24 | 9h | View |
| September | 28°C | 26°C | 25 | 9h | View |
| October | 28°C | 25°C | 27 | 8h | View |
| November | 28°C | 25°C | 21 | 9h | View |
| December | 28°C | 25°C | 12 | 10h | View |
January
7 rain days, 11h sun
29°25°
February
4 rain days, 11h sun
29°26°
March
11 rain days, 11h sun
30°26°
April
18 rain days, 11h sun
30°27°
May
25 rain days, 10h sun
29°27°
June
23 rain days, 10h sun
29°26°
July
24 rain days, 9h sun
29°26°
August
24 rain days, 9h sun
28°26°
September
25 rain days, 9h sun
28°26°
October
27 rain days, 8h sun
28°25°
November
21 rain days, 9h sun
28°25°
December
12 rain days, 10h sun
28°25°
Other Months in Phuket
Plan Your Trip to Phuket
Nearby Destinations
Cities within 500 km with comparable weather conditions
Data Sources for Phuket
Climate normals represent 30-year averages (1991-2020). Individual years may vary.