| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 32.6° | 23.1° | 71.2mm | 8.4 | 61 |
| February | 32.9° | 23.3° | 45.3mm | 5.8 | 65 |
| March | 33.3° | 23.9° | 81.5mm | 7 | 61 |
| April | 33.4° | 24.2° | 67.3mm | 8 | 58 |
| May | 33.4° | 24.6° | 98.7mm | 11.8 | 51 |
| June | 32.7° | 24.5° | 153.9mm | 15.3 | 47 |
| July | 32.5° | 24.3° | 154.9mm | 16.1 | 48 |
| August | 32.7° | 24.2° | 134mm | 13.9 | 49 |
| September | 32.6° | 24.1° | 131.5mm | 12.3 | 53 |
| October | 32.6° | 24.4° | 190.8mm | 14.7 | 48 |
| November | 33.2° | 24.2° | 115.8mm | 11.2 | 53 |
| December | 33° | 23.5° | 90.6mm | 10.2 | 56 |
January in City of Isabela averages a daily high of 32.6°C with nights around 23.1°C. Expect roughly 8.4 wet days totalling 71.2mm. Generally workable, with some weather to plan around.
February in City of Isabela averages a daily high of 32.9°C with nights around 23.3°C. Expect roughly 5.8 wet days totalling 45.3mm. Generally workable, with some weather to plan around.
March in City of Isabela averages a daily high of 33.3°C with nights around 23.9°C. Expect roughly 7 wet days totalling 81.5mm. Generally workable, with some weather to plan around.
April in City of Isabela averages a daily high of 33.4°C with nights around 24.2°C. Expect roughly 8 wet days totalling 67.3mm. Generally workable, with some weather to plan around.
May in City of Isabela averages a daily high of 33.4°C with nights around 24.6°C. Expect roughly 11.8 wet days totalling 98.7mm. Demanding conditions — pack for it and plan indoor options.
June in City of Isabela averages a daily high of 32.7°C with nights around 24.5°C. Expect roughly 15.3 wet days totalling 153.9mm. Demanding conditions — pack for it and plan indoor options.
July in City of Isabela averages a daily high of 32.5°C with nights around 24.3°C. Expect roughly 16.1 wet days totalling 154.9mm. Demanding conditions — pack for it and plan indoor options.
August in City of Isabela averages a daily high of 32.7°C with nights around 24.2°C. Expect roughly 13.9 wet days totalling 134mm. Demanding conditions — pack for it and plan indoor options.
September in City of Isabela averages a daily high of 32.6°C with nights around 24.1°C. Expect roughly 12.3 wet days totalling 131.5mm. Demanding conditions — pack for it and plan indoor options.
October in City of Isabela averages a daily high of 32.6°C with nights around 24.4°C. Expect roughly 14.7 wet days totalling 190.8mm. Demanding conditions — pack for it and plan indoor options.
November in City of Isabela averages a daily high of 33.2°C with nights around 24.2°C. Expect roughly 11.2 wet days totalling 115.8mm. Demanding conditions — pack for it and plan indoor options.
December in City of Isabela averages a daily high of 33°C with nights around 23.5°C. Expect roughly 10.2 wet days totalling 90.6mm. 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. City of Isabela peaks at 65.
Based on 30 years of records, January–April scores highest for comfort in City of Isabela, balancing daytime temperature against rainfall.
April is the warmest, averaging a daily high of 33.4°C.
October is the wettest, averaging 190.8mm of rain across roughly 14.7 wet days.
July is the coolest month, with average daily highs around 32.5°C.