January
January · February · March
Sri Lanka · 1991–2020
January leads for comfortable weather in Kataragama: typically 31°C by day, 23.2°C at night, with 42 mm of rain. Based on measured 1991–2020 NOAA station history.
January · February · March
January · February · March
January · February · March
The weakest month is November, scoring 31 against January’s 61 — 198 mm of rain falls, and days average 30.6°C, 7° above the 24°C the score treats as ideal.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 31°C | 23.2°C | 42 mm | 3.5 | 27.4°C | 11 h 47 | 61 | Good coverage |
| February | 31.4°C | 23.3°C | 41 mm | 3.7 | 27.9°C | 11 h 55 | 59 | Good coverage |
| March | 32°C | 24.1°C | 31 mm | 2.9 | 28.8°C | 12 h 04 | 57 | Good coverage |
| April | 31.8°C | 25.2°C | 87 mm | 6.6 | 29.6°C | 12 h 15 | 45 | Good coverage |
| May | 31.1°C | 25.8°C | 78 mm | 7.4 | 28.9°C | 12 h 25 | 47 | Good coverage |
| June | 31°C | 25.3°C | 44 mm | 7 | 28.4°C | 12 h 30 | 53 | Good coverage |
| July | 31.5°C | 25.1°C | 25 mm | 4.3 | 28.1°C | 12 h 28 | 56 | Good coverage |
| August | 31°C | 24.8°C | 62 mm | 6.3 | 27.8°C | 12 h 20 | 52 | Good coverage |
| September | 30.5°C | 24.8°C | 111 mm | 8.3 | 27.8°C | 12 h 09 | 45 | Good coverage |
| October | 30.7°C | 24.5°C | 111 mm | 9.5 | 28.4°C | 11 h 58 | 44 | Good coverage |
| November | 30.6°C | 24°C | 198 mm | 12.9 | 28.5°C | 11 h 49 | 31 | Good coverage |
| December | 30.4°C | 23.5°C | 124 mm | 9.6 | 27.8°C | 11 h 45 | 45 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 34.7°C7 Jan 1999 | 17.7°C20 Jan 1899 | 105 mm17 Jan 1989 | 211 mm2011 · driest 0 mm in 1988 | 140 |
| February | 35.7°C23 Feb 2025 | 15.6°C16 Feb 1918 | 105 mm14 Feb 2013 | 169 mm2013 · driest 0 mm in 2014 | 141 |
| March | 35.3°C24 Mar 1902 | 17.4°C10 Mar 1908 | 81 mm18 Mar 1985 | 125 mm1985 · driest 0 mm in 1998 | 143 |
| April | 36.0°C21 Apr 1892 | 18.9°C17 Apr 1899 | 98 mm29 Apr 1995 | 257 mm1995 · driest 0 mm in 1967 | 144 |
| May | 36.4°C7 May 1904 | 19.5°C28 May 1897 | 80 mm26 May 2017 | 205 mm2018 · driest 0 mm in 1991 | 142 |
| June | 37.2°C3 Jun 1881 | 21.2°C7 Jun 1993 | 70 mm18 Jun 1973 | 118 mm1973 · driest 0 mm in 1988 | 142 |
| July | 36.3°C23 Jul 2023 | 19.6°C1 Jul 1933 | 37 mm31 Jul 2022 | 114 mm2021 · driest 0 mm in 1988 | 145 |
| August | 39.2°C22 Aug 1999 | 20.1°C10 Aug 1893 | 73 mm16 Aug 2002 | 166 mm2019 · driest 0 mm in 1988 | 143 |
| September | 36.5°C27 Sep 2022 | 20.6°C8 Sep 1888 | 130 mm15 Sep 2019 | 473 mm2023 · driest 0 mm in 1988 | 142 |
| October | 36.9°C31 Oct 1901 | 20.2°C31 Oct 1917 | 230 mm2 Oct 2023 | 523 mm2023 · driest 0 mm in 1963 | 142 |
| November | 36.7°C12 Nov 1874 | 19.6°C1 Nov 1917 | 192 mm22 Nov 1989 | 277 mm2009 · driest 0 mm in 1992 | 141 |
| December | 34.8°C7 Dec 2011 | 18.2°C30 Dec 1937 | 111 mm21 Dec 1957 | 391 mm2023 · driest 0 mm in 1989 | 141 |
| Month | Days 25°C+ | Days 30°C+ | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 27 | 21 | <1 |
| February | 25 | 22 | <1 |
| March | 27 | 26 | <1 |
| April | 27 | 26 | 2 |
| May | 28 | 24 | 1 |
| June | 27 | 18 | <1 |
| July | 27 | 20 | <1 |
| August | 29 | 20 | 1 |
| September | 28 | 19 | 2 |
| October | 27 | 21 | 2 |
| November | 26 | 19 | 4 |
| December | 26 | 19 | 3 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 84% | 15% | 4% | 14% | 28.7–31.0°C |
| February | 88% | 13% | 4% | 13% | 29.4–31.7°C |
| March | 85% | 14% | 5% | 8% | 30.2–32.1°C |
| April | 78% | 22% | 8% | 20% | 30.6–32.1°C |
| May | 78% | 23% | 7% | 27% | 29.9–31.7°C |
| June | 77% | 21% | 4% | 26% | 29.3–31.9°C |
| July | 85% | 15% | 3% | 13% | 29.7–32.3°C |
| August | 80% | 20% | 7% | 24% | 29.4–31.9°C |
| September | 73% | 29% | 11% | 41% | 29.4–31.3°C |
| October | 65% | 34% | 11% | 45% | 29.4–31.3°C |
| November | 56% | 42% | 17% | 58% | 29.3–31.1°C |
| December | 70% | 31% | 13% | 40% | 28.8–30.6°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page