| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 18.1° | 5° | 72.1mm | 8 | 78 |
| February | 18.3° | 5.3° | 67.7mm | 7.8 | 79 |
| March | 19.1° | 6.4° | 60.1mm | 7.6 | 82 |
| April | 20° | 7.1° | 24.9mm | 4.3 | 91 |
| May | 20.8° | 9° | 8.8mm | 2.2 | 96 |
| June | 22° | 10.7° | 1.8mm | 0.5 | 99 |
| July | 23.1° | 12.4° | 0.5mm | 0.3 | 99 |
| August | 23.4° | 12.6° | 0.3mm | 0.4 | 99 |
| September | 24.1° | 12° | 3.3mm | 0.8 | 98 |
| October | 23.8° | 9.8° | 13.5mm | 2.4 | 95 |
| November | 21.2° | 6.7° | 28.3mm | 4.6 | 91 |
| December | 18° | 4.6° | 55.6mm | 7.7 | 78 |
January in Santa Maria averages a daily high of 18.1°C with nights around 5°C. Expect roughly 8 wet days totalling 72.1mm. Comfortable conditions for being outdoors all day.
February in Santa Maria averages a daily high of 18.3°C with nights around 5.3°C. Expect roughly 7.8 wet days totalling 67.7mm. Comfortable conditions for being outdoors all day.
March in Santa Maria averages a daily high of 19.1°C with nights around 6.4°C. Expect roughly 7.6 wet days totalling 60.1mm. Comfortable conditions for being outdoors all day.
April in Santa Maria averages a daily high of 20°C with nights around 7.1°C. Expect roughly 4.3 wet days totalling 24.9mm. Comfortable conditions for being outdoors all day.
May in Santa Maria averages a daily high of 20.8°C with nights around 9°C. Rain is rare — about 2.2 wet days and 8.8mm across the month. Comfortable conditions for being outdoors all day.
June in Santa Maria averages a daily high of 22°C with nights around 10.7°C. Rain is rare — about 0.5 wet days and 1.8mm across the month. Comfortable conditions for being outdoors all day.
July in Santa Maria averages a daily high of 23.1°C with nights around 12.4°C. Rain is rare — about 0.3 wet days and 0.5mm across the month. Comfortable conditions for being outdoors all day.
August in Santa Maria averages a daily high of 23.4°C with nights around 12.6°C. Rain is rare — about 0.4 wet days and 0.3mm across the month. Comfortable conditions for being outdoors all day.
September in Santa Maria averages a daily high of 24.1°C with nights around 12°C. Rain is rare — about 0.8 wet days and 3.3mm across the month. Comfortable conditions for being outdoors all day.
October in Santa Maria averages a daily high of 23.8°C with nights around 9.8°C. Rain is rare — about 2.4 wet days and 13.5mm across the month. Comfortable conditions for being outdoors all day.
November in Santa Maria averages a daily high of 21.2°C with nights around 6.7°C. Expect roughly 4.6 wet days totalling 28.3mm. Comfortable conditions for being outdoors all day.
December in Santa Maria averages a daily high of 18°C with nights around 4.6°C. Expect roughly 7.7 wet days totalling 55.6mm. Comfortable conditions for being outdoors all day.
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. Santa Maria peaks at 99.
Based on 30 years of records, April–November scores highest for comfort in Santa Maria, balancing daytime temperature against rainfall.
September is the warmest, averaging a daily high of 24.1°C.
January is the wettest, averaging 72.1mm of rain across roughly 8 wet days.
December is the coolest month, with average daily highs around 18°C.