Upper western Gulf

Jan Dry

Feb Dry

Mar Transition

Apr Transition

May Wet

Jun Wet

Jul Wet

Aug Wet

Sep Peak wet

Oct Peak wet

Nov Transition

Dec Dry

Monthly detail

Month	Median rainfall	Rainy days	Season	Confidence
Jan	24.90 mm	2.40	Dry	0.940
Feb	15.80 mm	2.09	Dry	0.940
Mar	49.29 mm	3.72	Transition	0.940
Apr	49.62 mm	4.47	Transition	0.940
May	118.42 mm	12.89	Wet	0.940
Jun	85.29 mm	14.32	Wet	0.940
Jul	97.13 mm	16.00	Wet	0.940
Aug	90.23 mm	15.87	Wet	0.940
Sep	125.58 mm	16.39	Peak wet	0.940
Oct	247.88 mm	17.13	Peak wet	0.940
Nov	77.39 mm	7.00	Transition	0.940
Dec	10.95 mm	2.08	Dry	0.940

Thai Meteorological Department, Monthly Rainfall (https://data.tmd.go.th/dataset/index.php). No license stated by the publisher; published openly, no access restriction. Baseline 2001–2025, method v1. Regional classification and derived indicators are our own calculations.