| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 8.9° | 1.5° | 94.6mm | 15.8 | 34 |
| February | 9.5° | 1.8° | 70.8mm | 13.8 | 39 |
| March | 11.6° | 2.8° | 64.1mm | 13.5 | 46 |
| April | 14.4° | 4.2° | 54.9mm | 11.5 | 59 |
| May | 17.6° | 7.4° | 53.4mm | 11.2 | 70 |
| June | 20.4° | 10.3° | 52.2mm | 9.9 | 80 |
| July | 22.4° | 12.2° | 51.2mm | 9.9 | 80 |
| August | 22.1° | 12.1° | 56.9mm | 11.1 | 78 |
| September | 19.8° | 9.8° | 68.6mm | 11.2 | 77 |
| October | 16° | 7.8° | 103.8mm | 15.6 | 57 |
| November | 11.9° | 4° | 109.2mm | 16.4 | 44 |
| December | 9.4° | 2.1° | 102.1mm | 16.8 | 36 |
January in Eastleigh averages a daily high of 8.9°C with nights around 1.5°C. Expect roughly 15.8 wet days totalling 94.6mm. A hard month to visit for comfort alone.
February in Eastleigh averages a daily high of 9.5°C with nights around 1.8°C. Expect roughly 13.8 wet days totalling 70.8mm. Demanding conditions — pack for it and plan indoor options.
March in Eastleigh averages a daily high of 11.6°C with nights around 2.8°C. Expect roughly 13.5 wet days totalling 64.1mm. Demanding conditions — pack for it and plan indoor options.
April in Eastleigh averages a daily high of 14.4°C with nights around 4.2°C. Expect roughly 11.5 wet days totalling 54.9mm. Generally workable, with some weather to plan around.
May in Eastleigh averages a daily high of 17.6°C with nights around 7.4°C. Expect roughly 11.2 wet days totalling 53.4mm. Generally workable, with some weather to plan around.
June in Eastleigh averages a daily high of 20.4°C with nights around 10.3°C. Expect roughly 9.9 wet days totalling 52.2mm. Comfortable conditions for being outdoors all day.
July in Eastleigh averages a daily high of 22.4°C with nights around 12.2°C. Expect roughly 9.9 wet days totalling 51.2mm. Comfortable conditions for being outdoors all day.
August in Eastleigh averages a daily high of 22.1°C with nights around 12.1°C. Expect roughly 11.1 wet days totalling 56.9mm. Comfortable conditions for being outdoors all day.
September in Eastleigh averages a daily high of 19.8°C with nights around 9.8°C. Expect roughly 11.2 wet days totalling 68.6mm. Comfortable conditions for being outdoors all day.
October in Eastleigh averages a daily high of 16°C with nights around 7.8°C. Expect roughly 15.6 wet days totalling 103.8mm. Generally workable, with some weather to plan around.
November in Eastleigh averages a daily high of 11.9°C with nights around 4°C. Expect roughly 16.4 wet days totalling 109.2mm. Demanding conditions — pack for it and plan indoor options.
December in Eastleigh averages a daily high of 9.4°C with nights around 2.1°C. Expect roughly 16.8 wet days totalling 102.1mm. Demanding conditions — pack for it and plan indoor options.
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. Eastleigh peaks at 80.
Based on 30 years of records, June–September scores highest for comfort in Eastleigh, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 22.4°C.
November is the wettest, averaging 109.2mm of rain across roughly 16.4 wet days.
January is the coolest month, with average daily highs around 8.9°C.