Indicator · TLI ind_heat_days_35c

Annual Count of Days With Maximum Temperature ≥ 35°C

จำนวนวันต่อปีที่อุณหภูมิสูงสุด ≥ 35°C

AS OF 31 DEC 2024 days/yr ≥35°C (≥95°F) Weight 1

Source

NASA POWER (Thailand Meteorological Department reserved as ground-validation)

NASA satellite-and-reanalysis climate dataset; daily maximum-temperature grid covering all 77 Thai provinces. Refresh: monthly upstream (NASA POWER finalizes a rolling 60-day window); TLI re-pulls annually for the heat-days metric.

Goalposts

The 0-to-100 score for this indicator is normalized against fixed methodology goalposts. The values below define the band; click through to the methodology page for the framework that anchors them.

Score 100: 60 days/yr ≥35°C (≥95°F)
Score 0: 250 days/yr ≥35°C (≥95°F)
Direction: Lower is better
Anchor: Fitted to the Thai provincial distribution

Goalposts of 60 days and 250 days are fitted to the observed NASA POWER distribution for 2024. Highland northern provinces such as Mae Hong Son and Chiang Rai record 60 to 100 days at or above 35°C; the hottest central plain and northeast provinces (Nakhon Pathom 150, Suphan Buri 146) approach 200 to 250 in extreme years. Heat index is conceptually preferred but is not available consistently across the source grid.

Live distribution: 25 of 77 provinces clip at the score-100 ceiling .

Which Thai province leads on Annual Count of Days With Maximum Temperature ≥ 35°C?

25 Thai provinces share the maximum TLI score of 100/100 on Annual Count of Days With Maximum Temperature ≥ 35°C; the strongest by raw value are Phuket , Rayong , and Trat (raw values from 0 to 0 days/yr ≥35°C (≥95°F)). The bottom of the distribution is Nakhon Pathom (150.6 days/yr ≥35°C (≥95°F), score 52.3/100).

Coverage

77 of 77 Thai provinces. Median score: 84.9. Each province's score is normalized 0–100 against fixed goalposts; a higher score is more favorable.

Reading the columns. Raw value the actual measurement in days/yr ≥35°C (≥95°F). Score normalized 0–100 against fixed methodology goalposts (not a percentile). Lower is better. Why ties? 25 provinces share the score-100 ceiling because their raw values meet or exceed the upper goalpost. Provinces beyond the goalposts aren't separated further — that's the trade-off for fixed, year-over-year comparable scoring instead of percentiles.

Top scorers

Rank	Province	Score
1	Phuket	100
2	Rayong	100
3	Trat	100
4	Songkhla	100
5	Chanthaburi	100

Lowest scorers

Rank	Province	Raw value (days/yr ≥35°C (≥95°F))	Score
77	Nakhon Pathom	150.6	52.3
76	Suphan Buri	146.6	54.4
75	Chai Nat	138.6	58.6
74	Nakhon Sawan	132.6	61.8
73	Uthai Thani	132.6	61.8

Show all 77 provinces ranked Sorted highest to lowest score

Rank	Province	Raw value (days/yr ≥35°C (≥95°F))	Score
1	Phuket	0	100
2	Rayong	0	100
3	Trat	0	100
4	Songkhla	0	100
5	Chanthaburi	0	100
6	Pattani	0	100
7	Nakhon Si Thammarat	3	100
8	Krabi	4	100
9	Narathiwat	6	100
10	Prachuap Khiri Khan	9	100
11	Satun	9	100
12	Yala	12	100
13	Chumphon	17	100
14	Phatthalung	18	100
15	Trang	20.9	100
16	Surat Thani	34.9	100
17	Ranong	38.9	100
18	Phangnga	44.9	100
19	Bueng Kan	45.9	100
20	Nakhon Phanom	47.9	100
21	Mae Hong Son	48.9	100
22	Chiang Mai	52.9	100
23	Phetchaburi	52.9	100
24	Phetchabun	55.8	100
25	Nan	59.8	100
26	Lamphun	66.8	96.4
27	Phayao	66.8	96.4
28	Phrae	69.8	94.8
29	Lampang	70.8	94.3
30	Samut Prakan	72.8	93.3
31	Chaiyaphum	72.8	93.3
32	Loei	74.8	92.2
33	Sakon Nakhon	74.8	92.2
34	Chiang Rai	77.8	90.6
35	Nong Khai	84.8	87
36	Udon Thani	86.8	85.9
37	Nong Bua Lam Phu	86.8	85.9
38	Kanchanaburi	88.8	84.9
39	Nakhon Ratchasima	88.8	84.9
40	Mukdahan	89.8	84.3
41	Yasothon	89.8	84.3
42	Amnat Charoen	89.8	84.3
43	Uttaradit	90.8	83.8
44	Sa Kaeo	90.8	83.8
45	Kalasin	91.7	83.3
46	Khon Kaen	93.7	82.2
47	Maha Sarakham	96.7	80.7
48	Chon Buri	97.7	80.1
49	Chachoengsao	97.7	80.1
50	Phichit	98.7	79.6
51	Roi Et	98.7	79.6
52	Kamphaeng Phet	99.7	79.1
53	Tak	99.7	79.1
54	Ubon Ratchathani	100.7	78.6
55	Nakhon Nayok	102.7	77.5
56	Prachin Buri	102.7	77.5
57	Si Sa Ket	102.7	77.5
58	Surin	102.7	77.5
59	Phitsanulok	105.7	75.9
60	Sukhothai	105.7	75.9
61	Buri Ram	111.7	72.8
62	Phra Nakhon Si Ayutthaya	124.7	66
63	Samut Songkhram	124.7	66
64	Saraburi	124.7	66
65	Samut Sakhon	124.7	66
66	Ratchaburi	124.7	66
67	Ang Thong	124.7	66
68	Bangkok	129.6	63.3
69	Nonthaburi	129.6	63.3
70	Pathum Thani	129.6	63.3
71	Sing Buri	129.6	63.3
72	Lopburi	129.6	63.3
73	Uthai Thani	132.6	61.8
74	Nakhon Sawan	132.6	61.8
75	Chai Nat	138.6	58.6
76	Suphan Buri	146.6	54.4
77	Nakhon Pathom	150.6	52.3

Methodology

See the methodology page for the full TLI scoring approach, including how this indicator's category Environment & Climate combines with the other six categories via geometric mean.

Cite as: "Annual Count of Days With Maximum Temperature ≥ 35°C." Thailand Livability Index, 2026. CC BY-NC 4.0.

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