| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 14.7° | 6.8° | 125.4mm | 11.4 | 60 |
| February | 16.3° | 7.2° | 121.4mm | 9.9 | 68 |
| March | 17.7° | 7.8° | 93.2mm | 9.6 | 73 |
| April | 19.2° | 8.4° | 49.5mm | 6.8 | 84 |
| May | 21.1° | 9.9° | 19.2mm | 3.2 | 94 |
| June | 23.2° | 11.3° | 3.6mm | 1.2 | 98 |
| July | 23.2° | 12° | 0.2mm | 0.3 | 99 |
| August | 23.7° | 12.6° | 1.5mm | 0.6 | 99 |
| September | 24.2° | 12.2° | 3.7mm | 1 | 98 |
| October | 22.6° | 11° | 30.3mm | 3.3 | 93 |
| November | 18.3° | 8.7° | 67.6mm | 7.1 | 80 |
| December | 14.5° | 6.6° | 134.2mm | 10.3 | 62 |
January in Berkeley averages a daily high of 14.7°C with nights around 6.8°C. Expect roughly 11.4 wet days totalling 125.4mm. Generally workable, with some weather to plan around.
February in Berkeley averages a daily high of 16.3°C with nights around 7.2°C. Expect roughly 9.9 wet days totalling 121.4mm. Generally workable, with some weather to plan around.
March in Berkeley averages a daily high of 17.7°C with nights around 7.8°C. Expect roughly 9.6 wet days totalling 93.2mm. Generally workable, with some weather to plan around.
April in Berkeley averages a daily high of 19.2°C with nights around 8.4°C. Expect roughly 6.8 wet days totalling 49.5mm. Comfortable conditions for being outdoors all day.
May in Berkeley averages a daily high of 21.1°C with nights around 9.9°C. Expect roughly 3.2 wet days totalling 19.2mm. Comfortable conditions for being outdoors all day.
June in Berkeley averages a daily high of 23.2°C with nights around 11.3°C. Rain is rare — about 1.2 wet days and 3.6mm across the month. Comfortable conditions for being outdoors all day.
July in Berkeley averages a daily high of 23.2°C with nights around 12°C. Rain is rare — about 0.3 wet days and 0.2mm across the month. Comfortable conditions for being outdoors all day.
August in Berkeley averages a daily high of 23.7°C with nights around 12.6°C. Rain is rare — about 0.6 wet days and 1.5mm across the month. Comfortable conditions for being outdoors all day.
September in Berkeley averages a daily high of 24.2°C with nights around 12.2°C. Rain is rare — about 1 wet days and 3.7mm across the month. Comfortable conditions for being outdoors all day.
October in Berkeley averages a daily high of 22.6°C with nights around 11°C. Expect roughly 3.3 wet days totalling 30.3mm. Comfortable conditions for being outdoors all day.
November in Berkeley averages a daily high of 18.3°C with nights around 8.7°C. Expect roughly 7.1 wet days totalling 67.6mm. Comfortable conditions for being outdoors all day.
December in Berkeley averages a daily high of 14.5°C with nights around 6.6°C. Expect roughly 10.3 wet days totalling 134.2mm. 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. Berkeley peaks at 99.
Based on 30 years of records, May–October scores highest for comfort in Berkeley, balancing daytime temperature against rainfall.
September is the warmest, averaging a daily high of 24.2°C.
December is the wettest, averaging 134.2mm of rain across roughly 10.3 wet days.
December is the coolest month, with average daily highs around 14.5°C.