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| Locations | Temperature(°C) | Max Wind | Amount of rainfall (mm) | ||||
| Max | Min | Direction | Speed (km/hr) | Time | 24 hr | Year-to-Date | |
| May 20, 2011 | |||||||
| Northern Part | |||||||
| MAE HONG SON | 33.5 | 23.3 | SE | 24.09 | 20:18 | 7.0 | 371.4 |
| DOI ANG KANG | 23.3 | 17.0 | WSW | 27.80 | 23:50 | - | 617.7 |
| CHIANG RAI | 31.4 | 23.3 | - N/A - | 2.1 | 341.8 | ||
| CHAING RAI AGROMET. | 31.2 | 23.1 | calm | 0.6 | 384.8 | ||
| THUNG CHANG | 31.4 | 22.9 | S | 14.83 | 19:17 | 14.3 | 462.8 |
| PHAYAO | 32.7 | 23.5 | - N/A - | - | 444.6 | ||
| THA WANGPHA | 32.0 | 23.8 | - N/A - | 23.1 | 357.5 | ||
| THOEN | 33.1 | 22.5 | SSW | 22.24 | 15:40 | - | 453.2 |
| MAE SARIANG | 33.4 | 23.4 | - N/A - | 1.4 | 381.0 | ||
| MAE JO AGROMET. | - N/A - | ||||||
| CHIANG MAI | 33.3 | 24.2 | SSW | 16.68 | 12:45 | - | 409.5 |
| LAMPANG | 34.0 | 23.0 | - N/A - | 2.6 | 483.2 | ||
| LAMPHUN | 33.5 | 24.0 | - N/A - | - | 421.1 | ||
| PHRAE | 33.1 | 24.2 | W | 11.12 | 16:09 | 0.8 | 459.1 |
| NAN | 34.4 | 23.5 | S | 11.12 | 15:00 | - | 440.2 |
| NAN AGROMET. | 32.5 | 23.8 | SW | 1.85 | 14:40 | Trace | 447.3 |
| LAMPANG AGROMET. | 31.7 | 23.0 | ESE | 9.27 | 10:39 | 2.6 | 508.3 |
| UTTARADIT | 34.2 | 24.5 | SW | 9.27 | 14:20 | - | 539.4 |
| SUKHOTHAI* | 33.2 | 24.7 | W | 14.83 | 19:50 | - | 567.5 |
| SI SAMRONG AGROMET. | 33.0 | 25.0 | calm | - | 547.4 | ||
| LOM SAK | 32.7 | 23.5 | - N/A - | 3.8 | 248.9 | ||
| MAE SOT | 32.2 | 22.7 | W | 12.97 | 13:35 | 20.3 | 382.3 |
| TAK | 32.4 | 25.1 | WSW | 25.95 | 10:38 | - | 391.1 |
| BHUMIBOL DAM | 33.8 | 23.0 | W | 12.97 | 18:05 | - | 528.6 |
| PHITSANULOK | 32.6 | 24.6 | SW | 16.68 | 11:40 | - | 351.0 |
| PHETCHABUN | 33.2 | 23.8 | - N/A - | - | 461.8 | ||
| KAMPHAENG PHET | 32.8 | 23.7 | ESE | 16.68 | 15:44 | Trace | 326.4 |
| UMPHANG | 27.5 | 21.0 | ENE | 9.27 | 13:17 | 3.7 | 486.7 |
| PICHIT AGROMET. | 33.5 | 24.4 | SW | 18.53 | 18:00 | 23.2 | 408.1 |
| DOI MU SOE AGROMET. | 25.5 | 19.7 | W | 31.51 | 15:55 | 7.7 | 576.9 |
| WICHIAN BURI | 33.8 | 24.7 | - N/A - | - | 304.3 | ||
| Northeastern Part | |||||||
| LOEI AGROMET. | 33.1 | 22.6 | SE | 11.12 | 12:40 | 3.8 | 206.7 |
| NONG KHAI | 32.5 | 22.8 | - N/A - | Trace | 323.9 | ||
| LOEI | 33.3 | 22.7 | - N/A - | 3.4 | 287.8 | ||
| UDON THANI | 33.2 | 23.3 | - N/A - | 0.3 | 286.8 | ||
| SAKON NAKHON AGROMET. | 33.0 | 23.0 | - N/A - | - | 435.8 | ||
| SAKON NAKHON | 33.4 | 23.2 | WSW | 14.83 | 12:50 | Trace | 317.9 |
| NAKHON PHANOM | 30.5 | 23.0 | ESE | 14.83 | 10:23 | 11.1 | 291.2 |
| NAKHON PHANOM AGROMET. | 29.0 | 22.2 | calm | 1.9 | 330.2 | ||
| NONG BUA LAM PHU | 33.5 | 22.2 | SSE | 16.68 | 15:03 | 3.0 | 299.9 |
| KHON KAEN | 33.6 | 23.9 | WNW | 31.51 | 15:44 | 6.7 | 125.2 |
| MAHASARAKHAM | 35.0 | 24.0 | - N/A - | - | 235.7 | ||
| MUKDAHAN | 34.9 | 23.9 | ESE | 27.80 | 13:04 | - | 132.4 |
| THA PHRA AGROMET. | 32.9 | 23.5 | SSW | 14.83 | 13:40 | 4.5 | 149.2 |
| KALASIN | 33.3 | 23.9 | S | 27.80 | 12:30 | - | 219.3 |
| CHAIYAPHUM | 33.3 | 24.0 | - N/A - | - | 282.8 | ||
| ROI ET AGROMET. | 32.7 | 23.9 | WSW | 27.80 | 09:50 | - | 322.6 |
| ROI ET | 34.2 | 24.2 | S | 22.24 | 11:00 | - | 274.3 |
| UBON RATCHATHANI | 35.1 | 22.9 | SW | 24.09 | 13:55 | - | 285.1 |
| UBON RATCHATHANI AGROMET. | 34.6 | 23.9 | SW | 14.83 | 10:15 | - | 192.3 |
| SI SAKET AGROMET. | 34.5 | 25.5 | - N/A - | - | 215.6 | ||
| THA TUM | 34.8 | 24.1 | SSW | 20.39 | 14:40 | - | 132.3 |
| NAKHON RATCHASIMA | 34.9 | 24.5 | - N/A - | - | 281.5 | ||
| SURIN | 34.5 | 24.6 | SW | 25.95 | 08:37 | - | 242.3 |
| SURIN AGROMET. | 35.6 | 24.5 | S | 18.53 | 14:10 | - | 175.5 |
| CHOK CHAI | 34.6 | 23.5 | NW | 22.24 | 16:00 | - | 169.9 |
| PAKCHONG AGROMET. | 30.7 | 22.5 | W | 29.65 | 10:06 | 0.2 | 382.2 |
| NANG RONG | 35.7 | 24.0 | W | 22.24 | 14:36 | - | 344.4 |
| BURIRUM | 34.5 | 23.5 | WSW | 22.24 | 14:22 | - | 290.8 |
| Central Part | |||||||
| NAKHON SAWAN | 34.6 | 24.2 | SW | 9.27 | 13:16 | - | 406.3 |
| TAKFA AGROMET. | 34.3 | 24.5 | SW | 14.83 | 16:35 | - | 276.9 |
| CHAINAT AGROMET. | 34.0 | 25.0 | SW | 14.83 | 12:30 | - | 237.0 |
| AYUTTHAYA | 34.5 | 23.9 | NNW | 22.24 | 21:40 | 4.1 | 269.5 |
| NAKORNNAYOK | - N/A - | ||||||
| BUA CHUM | 34.2 | 23.0 | S | 18.53 | 11:20 | - | 139.8 |
| PATHUMTHANI | 35.5 | 24.5 | WSW | 22.24 | 12:00 | - | 432.7 |
| Samut Prakarn | 32.7 | 26.4 | SSW | 18.53 | 22:00 | 2.9 | 424.6 |
| THONG PHAPHUM | 31.7 | 23.0 | NNW | 14.83 | 14:17 | 0.6 | 455.9 |
| SUPHAN BURI | 35.7 | 23.6 | WSW | 11.12 | 11:30 | 1.2 | 199.4 |
| LOP BURI | 34.9 | 24.3 | SSW | 12.97 | 10:00 | 1.2 | 268.1 |
| U THONG AGROMET. | 36.3 | 21.8 | WSW | 7.41 | 10:00 | - | 151.0 |
| SUVARNABHUMI AIRPORT | 34.2 | 25.0 | S | 33.36 | 15:00 | 8.0 | 352.3 |
| KANCHANA BURI | 36.5 | 23.0 | S | 18.53 | - | 460.4 | |
| NAKHONPATHOM | 35.7 | 23.3 | WNW | 18.53 | 15:33 | - | 220.7 |
| BANG NA AGROMET. | 34.7 | 25.5 | SE | 5.56 | 16:00 | - | 431.8 |
| BANGKOK PORT (KLONG TOEI) | 34.7 | 25.7 | SSW | 18.53 | 14:30 | - | 557.7 |
| BANGKOK METROPOLIS | 35.2 | 25.7 | SW | 22.24 | 17:30 | - | 564.1 |
| DON MUANG AIRPORT | 34.4 | 25.0 | SW | 24.09 | 12:30 | - | 531.3 |
| PILOT STATION | 32.0 | 27.6 | S | 29.65 | 20:10 | - | 119.1 |
| RATCHA BURI | 36.0 | 24.7 | SSE | 24.09 | 14:21 | - | 150.4 |
| Eastern Part | |||||||
| PRACHIN BURI | 35.5 | 24.2 | - N/A - | 16.7 | 433.8 | ||
| KABIN BURI | 34.4 | 24.7 | - N/A - | - | 244.2 | ||
| SA KAEW | 34.6 | 24.2 | W | 12.97 | 13:20 | - | 521.6 |
| CHACHOENGSAO | 34.5 | 24.5 | SW | 11.12 | 13:00 | - | 412.6 |
| CHON BURI | 34.2 | 25.9 | W | 12.97 | 13:42 | - | 365.4 |
| KO SICHANG | 32.1 | 26.0 | W | 14.83 | 11:00 | - | 241.9 |
| PHATTHAYA | 32.8 | 26.5 | - N/A - | - | 355.0 | ||
| ARANYA PRATHET | 35.7 | 24.7 | WSW | 31.51 | 14:35 | 0.2 | 282.7 |
| LAEM CHABANG | 33.5 | 25.2 | WNW | 18.53 | 11:10 | - | 347.6 |
| SATTAHIP | 34.5 | 24.4 | - N/A - | - | 412.3 | ||
| RAYONG | 32.0 | 28.8 | SSW | 24.09 | 01:55 | - | 338.3 |
| HUAI PONG AGROMET. | 34.4 | 24.5 | W | 48.18 | 05:09 | - | 663.5 |
| CHANTHA BURI | 34.0 | 25.5 | - N/A - | 5.9 | 438.4 | ||
| PHLIU AGROMET. | 31.7 | 25.2 | WSW | 16.68 | 10:15 | 2.0 | 465.2 |
| TRAD | 33.2 | 25.3 | - N/A - | 2.0 | 831.8 | ||
| Southern Part (East Coast) | |||||||
| PHETCHA BURI | 34.2 | 24.2 | SSE | 31.51 | 13:10 | - | 247.3 |
| NONG PHLUB AGROMET. | 35.9 | 21.9 | - N/A - | - | 209.7 | ||
| HUA HIN | 33.4 | 24.5 | - N/A - | - | 138.8 | ||
| PRACHUAP KHIRIKHAN | 35.3 | 24.9 | ESE | 14.83 | 15:20 | 1.5 | 225.3 |
| CHUMPHON | 33.8 | 23.8 | WNW | 25.95 | 16:05 | - | 715.3 |
| SAWI AGROMET. | 34.4 | 22.9 | SW | 14.83 | 10:00 | - | 930.1 |
| KO SAMUI | 33.3 | 24.1 | W | 14.83 | 08:45 | 2.0 | 1,641.4 |
| SURAT THANI | 34.5 | 23.8 | SSW | 29.65 | 14:30 | 0.5 | 1,113.7 |
| NAKHONSI THAMMARAT | 34.2 | 22.6 | S | 22.24 | 11:20 | - | 2,314.7 |
| NAKHONSI THAMMARAT AGROMET. | 34.2 | 24.3 | SSW | 11.12 | 13:00 | 41.4 | 2,149.5 |
| SURAT THANI AGROMET. | 33.0 | 22.5 | WSW | 18.53 | 16:40 | 29.2 | 1,952.3 |
| PHRA SANG | 33.3 | 22.9 | - N/A - | 1.0 | 770.7 | ||
| CHAWANG | 35.5 | 22.5 | NNE | 7.41 | 22:30 | 30.2 | 990.5 |
| PHATTHALUNG AGROMET. | 34.7 | 23.5 | ENE | 18.53 | 14:10 | - | 1,435.1 |
| SONGKHLA | 33.6 | 25.0 | - N/A - | 1.2 | 878.6 | ||
| HAT YAI AIRPORT | 33.7 | 24.0 | NE | 27.80 | 17:45 | 16.0 | 671.6 |
| KHO HONG AGROMET. | 34.7 | 24.2 | SW | 16.68 | 15:05 | 9.1 | 757.2 |
| SA DAO | 34.0 | 24.0 | SSW | 24.09 | 14:00 | 0.3 | 302.7 |
| PATTANI AIRPORT | 34.8 | 24.9 | NNE | 22.24 | 14:35 | - | 585.7 |
| YALA AGROMET. | 35.3 | 24.4 | SW | 27.80 | 13:42 | 10.6 | 877.6 |
| NARATHIWAT | 32.7 | 24.1 | - N/A - | 0.5 | 1,337.1 | ||
| Southern Part (West Coast) | |||||||
| RANONG | 32.2 | 23.0 | WSW | 18.53 | 13:14 | - | 1,014.0 |
| TAKUA PA | 32.2 | 25.0 | WNW | 14.83 | 18:15 | 0.7 | 1,192.3 |
| KRABI | 32.4 | 21.7 | NNE | 14.83 | 16:13 | - | 826.0 |
| PHUKET | 33.0 | 25.4 | NW | 18.53 | 17:08 | 4.8 | 698.7 |
| PHUKET AIRPORT | 32.1 | 24.3 | W | 14.83 | 15:10 | - | 865.1 |
| KO LANTA | 31.3 | 24.5 | W | 20.39 | 21:55 | 0.2 | 400.0 |
| TRANG AIRPORT | 33.0 | 22.7 | - N/A - | - | 820.7 | ||
| SATUN | 33.5 | 24.1 | WSW | 22.24 | 12:45 | 0.6 | 832.6 |