Thailand Climate – June 2026 Update
Top 5 Cities: Bangkok, Chiang Mai, Pattaya, Phuket, and Nonthaburi
This month in numbers
Thailand experienced a significantly warmer June, with an average temperature of 27.73°C, marking an anomaly of +0.8°C above the 1961–1990 baseline. This ranks as the 22nd warmest June in 86 years of records. Globally, June 2026 was the 3rd warmest June on record for land temperatures, with an anomaly of +1°C. The three-month period from April to June 2026 also saw elevated temperatures, ranking as the 25th warmest on record for Thailand.
What changed
The past three months (April–June 2026) in Thailand were notably warmer, with an average temperature of 28.11°C, an anomaly of +0.5°C above the 1961–1990 baseline. This trend aligns with the broader global picture, as global land temperatures for the same period ranked as the 2nd warmest on record, with an anomaly of +1°C. Thailand's 1-month anomaly of +0.8°C places it 162nd out of 234 regions globally, indicating that while warmer, it was not among the most extreme temperature anomalies worldwide. The country's long-term warming trend stands at +1.13°C compared to the 1961–1990 baseline, with 2025 being the warmest year on record.
What’s driving change?
The current warming trend in Thailand is significantly influenced by the ongoing El Niño event, which officially formed in June 2026 and is expected to persist throughout the year and into early 2027. El Niño typically brings warmer and drier conditions to Maritime Southeast Asia, including Thailand, and is associated with an increased risk of severe drought and heatwaves. Indeed, Bangkok experienced a "dangerous" heat index of 51.9°C in June, prompting authorities to open cooling shelters. The National Water Resources Office has also warned of a prolonged dry spell from late June to mid-July due to El Niño, with rainfall since the beginning of the year already around 10% below the long-term average. Despite the overall drier trend, heavy monsoon rains in June led to flash flood and landslide warnings across numerous provinces, particularly in the south and along the Andaman coast. This highlights the erratic weather patterns driven by El Niño, which can lead to both drought and intense rainfall events.
Generated by Gemini from climate data and web sources
At a Glance
Temperature – Average
Year-on-Year Trends
The 4byo Climate Helix – Thailand
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Thailand – Monthly Temperature – All Years
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Records – Thailand
Our World in Data / NOAA - Anomalies vs 1901-2000 mean
Shifting Seasons
Warm/cold + wet/dryKöppen Aw · TropicalThailand has both a clear warm/cold cycle (±2.6°C) and a wet/dry cycle (15× wet:dry ratio). Both sides of the annual rhythm are shown below.
Monthly rainfall climatology. A “wet month” exceeds the baseline monthly mean (dashed gold line). Biggest month-to-month shift: Sep (+30 mm, +12%).
Data: Our World in Data / NOAA (rainfall: World Bank CCKP / CRU TS 4.08). Baseline: first 30 yrs on record. Recent: last 10 yrs on record.
Rainfall & Precipitation
Rainfall & Rain Days – Totals
Headline: anomaly vs the 1961–1990 mean. Small figure: the actual value. Rank: position in the full record (1st = highest ever). Record: highest (or lowest) value on record with its year.
Climate Systems
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Emissions & Energy
Explore
Explore Climate Data
Data Sources
Data Sources for Thailand
Every figure on this page is sourced from official, openly published climate datasets. Anomalies are calculated against the 1961–1990 baseline (temperature) and 1991–2020 (rainfall, sunshine, frost) - see the Methodology & Sources page for the complete dataset list and update calendar.
FAQs
FAQs
How is the climate in Thailand changing?
Thailand is warming in line with the rest of the world. The page above shows the latest monthly temperature anomaly versus the 1961-1990 baseline, the long-term annual trend, and the region's rank in the historical record. The headline panel also shows the long-term trend rate per decade and the warmest and coolest years on file.
Where does the climate data for Thailand come from?
Climate data for Thailand comes from Our World in Data, sourcing Copernicus ERA5 and HadCRUT5 (national temperature anomaly) and the Global Carbon Project via Our World in Data (CO₂ emissions), refreshed every month, when the upstream temperature and rainfall data are refreshed.
What is the climate baseline used on this page?
Anomalies on this page are calculated against the 1961-1990 climatological baseline, which is the standard reference period used by the Met Office, NOAA, IPCC and most national climate services. Some panels also show the source-native 1901-2000 (NOAA) or 1991-2020 (WMO) baselines for verification. See Methodology & Sources for the full reference.
Which areas does the Thailand climate data cover?
The Thailand climate profile covers Bangkok, Chiang Mai, Pattaya, Phuket and surrounding areas. Temperature, rainfall and emissions data for Thailand
How often is the Thailand climate update refreshed?
The Thailand climate update is refreshed monthly, typically a few days after the previous month closes and the upstream provider (Met Office HadUK-Grid, NOAA Climate at a Glance, Copernicus ERA5 or the Global Carbon Project) publishes its update. See the Climate Rankings for cross-region comparisons.