| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 32.9° | 22.5° | 2.3mm | 0.6 | 75 |
| February | 33.5° | 23.3° | 21.3mm | 0.5 | 73 |
| March | 34.1° | 24.5° | 18.2mm | 3 | 66 |
| April | 33.9° | 25.4° | 45.1mm | 6 | 60 |
| May | 33° | 25° | 374.4mm | 18 | 46 |
| June | 31.2° | 24.2° | 274.3mm | 22.3 | 53 |
| July | 30.7° | 23.6° | 182.2mm | 21.2 | 55 |
| August | 31.1° | 23.8° | 235.5mm | 19.5 | 54 |
| September | 31.4° | 23.8° | 267.6mm | 20.4 | 52 |
| October | 31.5° | 23.7° | 402.6mm | 20.8 | 52 |
| November | 31.6° | 23.4° | 245.9mm | 19.3 | 52 |
| December | 32.3° | 23° | 19.5mm | 2.8 | 73 |
January in Thiruvananthapuram averages a daily high of 32.9°C with nights around 22.5°C. Rain is rare — about 0.6 wet days and 2.3mm across the month. Comfortable conditions for being outdoors all day.
February in Thiruvananthapuram averages a daily high of 33.5°C with nights around 23.3°C. Rain is rare — about 0.5 wet days and 21.3mm across the month. Generally workable, with some weather to plan around.
March in Thiruvananthapuram averages a daily high of 34.1°C with nights around 24.5°C. Expect roughly 3 wet days totalling 18.2mm. Generally workable, with some weather to plan around.
April in Thiruvananthapuram averages a daily high of 33.9°C with nights around 25.4°C. Expect roughly 6 wet days totalling 45.1mm. Generally workable, with some weather to plan around.
May in Thiruvananthapuram averages a daily high of 33°C with nights around 25°C. Expect roughly 18 wet days totalling 374.4mm. Demanding conditions — pack for it and plan indoor options.
June in Thiruvananthapuram averages a daily high of 31.2°C with nights around 24.2°C. Expect roughly 22.3 wet days totalling 274.3mm. Demanding conditions — pack for it and plan indoor options.
July in Thiruvananthapuram averages a daily high of 30.7°C with nights around 23.6°C. Expect roughly 21.2 wet days totalling 182.2mm. Generally workable, with some weather to plan around.
August in Thiruvananthapuram averages a daily high of 31.1°C with nights around 23.8°C. Expect roughly 19.5 wet days totalling 235.5mm. Demanding conditions — pack for it and plan indoor options.
September in Thiruvananthapuram averages a daily high of 31.4°C with nights around 23.8°C. Expect roughly 20.4 wet days totalling 267.6mm. Demanding conditions — pack for it and plan indoor options.
October in Thiruvananthapuram averages a daily high of 31.5°C with nights around 23.7°C. Expect roughly 20.8 wet days totalling 402.6mm. Demanding conditions — pack for it and plan indoor options.
November in Thiruvananthapuram averages a daily high of 31.6°C with nights around 23.4°C. Expect roughly 19.3 wet days totalling 245.9mm. Demanding conditions — pack for it and plan indoor options.
December in Thiruvananthapuram averages a daily high of 32.3°C with nights around 23°C. Rain is rare — about 2.8 wet days and 19.5mm across the month. Generally workable, with some weather to plan around.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Thiruvananthapuram peaks at 75.
Based on 30 years of records, December–February scores highest for comfort in Thiruvananthapuram, balancing daytime temperature against rainfall.
March is the warmest, averaging a daily high of 34.1°C.
October is the wettest, averaging 402.6mm of rain across roughly 20.8 wet days.
July is the coolest month, with average daily highs around 30.7°C.