Thailand Weather in March

In Bangkok and Pattaya: hot, mostly dry, highs 92°F (33°C), sea 85°F (29°C). On the Andaman coast: hot, mostly dry, highs 93°F (34°C), sea 86°F (30°C). On the Gulf islands: warm, mostly dry, highs 86°F (30°C), sea 85°F (30°C). Rating: Excellent — best on the Gulf islands. April rates Good. Humidity runs at 73–77% across the regions.

Excellentwarm and dry, warm sea, on the Gulf islands

Day high86–93°F (30–34°C)across regions

Sea84–86°F (29–30°C)at the beaches

Rainy days8–11per month

Climate normals checked September 29, 2026 · Source: Open-Meteo (ERA5) · How we calculate

Thailand weather in March by region

Thailand weather in March by region
Region	Day high	Night low	Sea	Rainy days	Rainfall	Humidity	Sun, h/day
Bangkok & Pattayacentral, eastern Gulf	92°F (33°C)	79°F (26°C)	85°F (29°C)	8	1.7 in (44 mm)	73%	10.8
Andaman coastKrabi, Khao Lak	93°F (34°C)	75°F (24°C)	86°F (30°C)	11	2.7 in (68 mm)	73%	10.9
Gulf islandsKoh Samui, Koh Phangan	86°F (30°C)	78°F (26°C)	85°F (30°C)	10	1.5 in (38 mm)	77%	11.0

Separately: Phuket in March →

Flight time from the US

By distance, flying time to Thailand is about 18 h from New York (JFK), 17 h 10 min from Los Angeles (LAX) and 16 h 30 min from San Francisco (SFO). Most trips from the US connect, so add at least 2 h for the layover. These are estimates, not schedules.

Flight time to Thailand from US hubs →

Other months in Thailand

Excellent Good Mixed Off-season

All months and temperature chart →

Phuket weather in March

Excellentwarm and dry, warm sea

Day high89°F (31°C)

Sea86°F (30°C)

Rainfall3.1 in (78 mm)

Thailand in March: FAQ

What's the weather like in Thailand in March?

In Bangkok and Pattaya it is hot and mostly dry, with highs of 92°F (33°C) and the sea at 85°F (29°C). On the Andaman coast it is hot and mostly dry, with highs of 93°F (34°C) and the sea at 86°F (30°C). On the Gulf islands it is warm and mostly dry, with highs of 86°F (30°C) and the sea at 85°F (30°C).

Is March a good time to visit Thailand?

We rate March as Excellent. Yes — best on the Gulf islands, with highs of 86°F (30°C) and about 1.5 in (38 mm) of rain for the month.

Is March rainy season in Thailand?

Driest on the Gulf islands, with about 1.5 in (38 mm) of rain and 10 rainy days. In Bangkok and Pattaya: 1.7 in (44 mm); On the Andaman coast: 2.7 in (68 mm).

How does Thailand in March compare to April?

April rates Good, March rates Excellent. In the best region, March brings highs of 86°F (30°C) and 1.5 in (38 mm) of rain; April brings 88°F (31°C) and 4.2 in (106 mm).

Where the data comes from

Air temperature, rainfall, humidity — ERA5 reanalysis (Copernicus / ECMWF) via Open-Meteo, averaged over 2015–2024. Each region uses one point: the resort or city in its caption.
Sea temperature — Open-Meteo Marine, average sea surface temperature for 2023–2026 (the source has no longer record yet).
Sunshine — sunshine duration from the same ERA5 reanalysis (Open-Meteo), average hours of sun per day for the month, 2015–2024.
Rainy days — days with at least 1 mm (0.04 in) of rain. Reanalysis picks up light rain more often than weather stations, so treat this as an upper bound.
Month rating — one rule for every destination, based on three factors: day highs (ideal 75–91°F / 24–33°C), monthly rainfall (ideal under 80 mm / 3.1 in) and, for beach regions, sea temperature (ideal 77°F / 25°C or warmer). All ideal means Excellent; one slightly weaker factor means Good. Mixed means heavy rain (150 mm / 5.9 in or more), highs above 97°F (36°C) or a sea below 70°F (21°C). Off-season means highs of 100°F (38°C) or more, cold below 54°F (12°C), over 350 mm (13.8 in) of rain, or several problems at once. A country's rating follows its best region, so check the regional table.

Checked September 29, 2026. Climate normals are refreshed yearly and the notes every 90 days. These are long-term averages, not a forecast: any given year can differ.