Si Maha Phot climate

Thailand · 13.97°N, 101.51°E · elevation 11 m · population 100,563

Warmest month
April
high 36 °C96 °F
Coldest month
December
low 19 °C66 °F
Wettest month
September
318 mm13 in
Best time to visit
December
by our comfort score
Annual precipitation
1,546 mm61 in
December driest
Year average
27 °C81 °F
tropical savanna (dry winter) (Aw)

Si Maha Phot (Thailand) has a tropical savanna (dry winter) climate (Köppen Aw). The average temperature over the year is 27 °C81 °F, and about 1,546 mm61 in of precipitation falls in an average year.

Temperature by month

Average highAverage low
15°20°25°30°35°40°60°70°80°90°100°JFMAMJJASOND36°97°19°66°January: high 32 °C / 89 °F, low 19 °C / 67 °FFebruary: high 35 °C / 95 °F, low 22 °C / 71 °FMarch: high 36 °C / 97 °F, low 24 °C / 75 °FApril: high 36 °C / 96 °F, low 25 °C / 77 °FMay: high 33 °C / 92 °F, low 25 °C / 77 °FJune: high 31 °C / 88 °F, low 25 °C / 76 °FJuly: high 31 °C / 87 °F, low 24 °C / 75 °FAugust: high 30 °C / 87 °F, low 24 °C / 75 °FSeptember: high 30 °C / 86 °F, low 24 °C / 75 °FOctober: high 30 °C / 86 °F, low 23 °C / 74 °FNovember: high 30 °C / 86 °F, low 21 °C / 70 °FDecember: high 30 °C / 85 °F, low 19 °C / 66 °F

Precipitation by month

Precipitation per month (mminches)
010020030040004812JJanuary: 15 mm / 0.6 inFFebruary: 16 mm / 0.6 inMMarch: 52 mm / 2.0 inAApril: 88 mm / 3.4 inMMay: 176 mm / 6.9 inJJune: 195 mm / 7.7 inJJuly: 220 mm / 8.7 inAAugust: 245 mm / 9.6 inSSeptember: 318 mm / 12.5 inOOctober: 185 mm / 7.3 inNNovember: 30 mm / 1.2 inDDecember: 7 mm / 0.3 in31812.5

Si Maha Phot climate table

Monthly averages, 2001–2025
MonthHigh °C°FLow °C°FMean °C°FPrecip. mmin
Jan328919672678150.6
Feb359522712883160.6
Mar369724753086522.0
Apr369625773087883.4
May3392257729841766.9
Jun3188257628821957.7
Jul3187247527812208.7
Aug3087247527812459.6
Sep30862475278031813
Oct3086237427801857.3
Nov308621702678301.2
Dec30851966247670.3
Year3697196627811,54661

“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.

Humidity, cloud, sun and daylight
MonthHumid.CloudSolarDaylight
Jan66%42%4.911:23
Feb62%42%5.211:40
Mar63%54%5.312:01
Apr68%68%5.612:26
May78%87%5.112:46
Jun83%90%5.012:57
Jul84%91%4.712:52
Aug86%94%4.712:35
Sep88%92%4.612:11
Oct86%76%4.711:48
Nov81%59%4.911:28
Dec73%48%4.911:18

Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.

What the climate of Si Maha Phot is like

The warmest month is April, with an average high of 36 °C96 °F and a low of 25 °C77 °F. The coldest is December, when highs average 30 °C85 °F and lows 19 °C66 °F. Seasonal differences are small — just 6 °C10.8 °F between the warmest and the coolest month.

It is wet, with about 1,546 mm61 in of precipitation per year. The wettest three-month stretch is July–September, which brings 51% of the annual total. Months with less than 20 mm0.8 in on average: December–February. The wettest month is September (318 mm13 in), the driest is December (7 mm0.3 in).

Relative humidity ranges from 62% in February to 88% in September. The clearest skies (lowest average cloud amount, 42%) are typical of February. Average wind speed near the ground ranges from 5 km/h (3 mph) in October to 7 km/h (5 mph) in December. Daylight lasts from about 11.3 hours in December to 12.9 hours in June.

Best time to visit Si Maha Phot

Based on these averages, the most comfortable months for sightseeing and outdoor activities are December: average highs of 30 °C85 °F to 30 °C85 °F with 7 mm0.3 in to 7 mm0.3 in of precipitation per month.

The most challenging month is September, which is very wet (318 mm13 in) and humid (88% relative humidity).

Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.

What to pack for Si Maha Phot

  • Wetter months (May–October) — highs 3086 to 33 °C92 °F, lows 2374 to 25 °C77 °F, about 223 mm8.8 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water and a good rain jacket or umbrella and quick-drying shoes.
  • Drier months (November–April) — highs 3085 to 36 °C97 °F, lows 1966 to 25 °C77 °F, about 34 mm1.4 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.

How Si Maha Phot compares

Compared with Kabin Buri, about 22 km to the east, Si Maha Phot is on average 0.3 °C0.5 °F warmer and receives a similar amount of precipitation. The difference is largest in January (0.5 °C0.9 °F warmer).

Of the 22 places in Thailand covered by World Climates, Si Maha Phot is the 12th warmest by annual mean temperature and the 5th wettest by annual precipitation. See all of them on the Thailand climate page.

Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Siem Reap (Cambodia, Aw), Battambang (Cambodia, Aw) and Cuiabá (Brazil, Aw).

Nearby places

  • Kabin Buri 22 km · 27 °C81 °F · 1,533 mm60 in
  • Chon Buri 88 km · 27 °C81 °F · 1,508 mm59 in
  • Khlong Luang 94 km · 28 °C82 °F · 1,361 mm54 in
  • Samut Prakan 107 km · 28 °C82 °F · 1,302 mm51 in
  • Si Racha 108 km · 28 °C83 °F · 1,347 mm53 in
  • Bangkok 112 km · 28 °C82 °F · 1,361 mm54 in
  • Nakhon Ratchasima 128 km · 27 °C80 °F · 1,220 mm48 in
  • Pattaya 133 km · 28 °C83 °F · 1,347 mm53 in

All places in Thailand

Frequently asked questions

What is the warmest month in Si Maha Phot?

April is the warmest month in Si Maha Phot, with an average high of 36 °C (96 °F) and an average low of 25 °C (77 °F).

What is the coldest month in Si Maha Phot?

December is the coldest month, with an average high of 30 °C (85 °F) and an average low of 19 °C (66 °F).

When does it rain the most in Si Maha Phot?

September is the wettest month with about 318 mm (12.5 in) of precipitation; December is the driest with about 7 mm (0.3 in).

What is the best time to visit Si Maha Phot?

Judging by long-term averages, the most comfortable months are December.

About this data

All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.

Sources and method