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Weather in Phayao for September 2025

Your guide to Phayao weather in September - trends and predictions

    Temperatures

  • So far, September 2025 in Phayao is slightly warmer than the historical average by 0.6 °C.

  • Expect cooler weather in the next days in Phayao with the forecast suggesting a temperature of 27.8 °C, lower than the historical average.

  • In general, the average temperature in Phayao at the beginning of September is 30.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.7 °C by the end of September.

    • Rain 🌧️

  • Phayao experiences heavy rainfall in September, with over 20 rainy days and an average total precipitation 376 mm.

    • More

  • Is September a good time to visit Phayao? check out the best time to travel to Phayao page.

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
0
Dry days
Average rainy days
30
Rainy days
Average snowy days
0
Snow days
Average temperatures
28°/20°
Temperatures
Average wind speed
6 km/h
Avg max wind
Average humidity
91 %
Avg humidity

Phayao Weather September

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Patchy light rain with thunder
29°
2
Patchy light rain with thunder
29°
3
Patchy light rain with thunder
31°
4
Patchy light rain with thunder
32°
5
Patchy light rain with thunder
31°
6
Light rain shower
31°
7
Patchy light rain with thunder
32°
8
Patchy light rain with thunder
29°
9
Moderate or heavy rain shower
28°
10
Light rain shower
27°
11
Light rain shower
27°
12
Patchy light rain with thunder
29°
13
Fog
27°
14
Fog
28°
15
Moderate or heavy rain shower
29°
16
Moderate rain
27°
17
Patchy rain possible
31°
18
Moderate rain
29°
19
Moderate rain
29°
20
Moderate rain
29°
21
Patchy rain possible
27°
22
Moderate rain
28°
23
Patchy rain possible
29°
24
Patchy rain possible
31°
25
Patchy rain possible
28°
26
Patchy rain possible
26°
27
Moderate rain
23°
28
Patchy rain possible
23°
29
Patchy rain possible
29°
30
Light rain shower
27°

Temperatures trend during September in Phayao

See the weather trend as well as the moving average line

September weather in Phayao day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /20° 13.4 mm 7
2 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /19° 7.8 mm 6
3 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 31° /19° 5.3 mm 7
4 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 32° /21° 4.4 mm 7
5 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 31° /21° 16 mm 7
6 Sept. Light rain shower
Light rain shower
 31° /21° 18.8 mm 7
7 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 32° /21° 10.5 mm 7
8 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /20° 16.5 mm 6
9 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 28° /20° 22.5 mm 6
10 Sept. Light rain shower
Light rain shower
 27° /20° 13 mm 6
11 Sept. Light rain shower
Light rain shower
 27° /20° 9 mm 6
12 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 29° /20° 4.8 mm 6
13 Sept. Fog
Fog
 27° /20° 5.9 mm 6
14 Sept. Fog
Fog
 28° /19° 8.7 mm 6
15 Sept. Moderate or heavy rain shower
Moderate or heavy rain shower
 29° /19° 8 mm 7
16 Sept. Moderate rain
Moderate rain
 27° /21° 5.9 mm 2.5
17 Sept. Patchy rain possible
Patchy rain possible
 31° /20° 3.6 mm 2.6
18 Sept. Moderate rain
Moderate rain
 29° /20° 6.4 mm 2.1
19 Sept. Moderate rain
Moderate rain
 29° /19° 6.6 mm 2.6
20 Sept. Moderate rain
Moderate rain
 29° /20° 10.4 mm 2.9
21 Sept. Patchy rain possible
Patchy rain possible
 27° /20° 1.5 mm 5
22 Sept. Moderate rain
Moderate rain
 28° /20° 5.2 mm 5
23 Sept. Patchy rain possible
Patchy rain possible
 29° /21° 1.9 mm 5
24 Sept. Patchy rain possible
Patchy rain possible
 31° /20° 2.2 mm 5
25 Sept. Patchy rain possible
Patchy rain possible
 28° /21° 3 mm 5
26 Sept. Patchy rain possible
Patchy rain possible
 26° /20° 4.1 mm 5
27 Sept. Moderate rain
Moderate rain
 23° /19° 10.7 mm 5
28 Sept. Patchy rain possible
Patchy rain possible
 23° /18° 2.3 mm 5
29 Sept. Patchy rain possible
Patchy rain possible
 29° /18° 0.3 mm 5
30 Sept. Light rain shower
Light rain shower
 27° /20° 11.4 mm 6
Next
Important Notice
Our weather forecast for Phayao in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Phayao forecast closer to your planned date for the most up-to-date weather information.
Change Month
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Phayao weather in September vs August vs October

Compare September weather in Phayao with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
AugustSeptemberOctober
WeatherPatchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Patchy rain possible
Temperatures27°/20°28°/20°29°/20°
Rainfall359 mm376 mm245 mm
Wind5.4 km/h5.5 km/h4.6 km/h
Humidity92%91%88%
Rainy days30 days30 days31 days
Dry days1 days0 days0 days

Planning a trip to Phayao? Discover the best time to visit

Phayao in September - FAQ

What are the expected maximum and minimum temperatures in Phayao during September?
During September, expect a variety of temperatures with highs around 28° and lows near 20°, suitable for diverse activities and preferences.
How much rainfall should be expected in Phayao during September?
Significant rainfall exceeding 376 mm is expected in Phayao during September, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Phayao during September?
The average wind speed in Phayao during September is 6 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Phayao in September?

As you prepare for your trip to Phayao in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Phayao, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Lightweight Clothing: T-shirts, blouses, shorts, skirts
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Umbrellas/Raincoats: For rainy days
  • Personal Items
    • Sunscreen: High SPF for sunny destinations
    • Lip Balm with SPF: To protect against chapped lips

September rainfall patterns in Phayao

Explore the daily rainfall trends and prepare for Phayaos September weather 💧

UV exposure in Phayao during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

Quick links

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Location coordinates Where is Phayao?

Get accurate weather forecasts for Phayao, located at latitude 19.192 and longitude 99.879. Stay updated with localized weather information tailored for Phayao.

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