| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 19.4° | 4.8° | 49.3mm | 6.5 | 85 |
| February | 18.9° | 5.6° | 63.4mm | 8.4 | 80 |
| March | 19.3° | 7.7° | 37.1mm | 8 | 82 |
| April | 20.4° | 9.3° | 19.4mm | 4.6 | 91 |
| May | 21.3° | 12.5° | 8.3mm | 3.6 | 93 |
| June | 22.7° | 14.7° | 1.3mm | 1.5 | 97 |
| July | 25.1° | 16.9° | 1.7mm | 0.6 | 99 |
| August | 25.8° | 16.9° | 3.1mm | 0.7 | 99 |
| September | 25.6° | 15.2° | 3.5mm | 1.7 | 97 |
| October | 24.2° | 11.4° | 18mm | 4.3 | 91 |
| November | 22° | 6.8° | 22.9mm | 5.3 | 89 |
| December | 19.1° | 4.4° | 48.5mm | 6.9 | 83 |
January in Carlsbad averages a daily high of 19.4°C with nights around 4.8°C. Expect roughly 6.5 wet days totalling 49.3mm. Comfortable conditions for being outdoors all day.
February in Carlsbad averages a daily high of 18.9°C with nights around 5.6°C. Expect roughly 8.4 wet days totalling 63.4mm. Comfortable conditions for being outdoors all day.
March in Carlsbad averages a daily high of 19.3°C with nights around 7.7°C. Expect roughly 8 wet days totalling 37.1mm. Comfortable conditions for being outdoors all day.
April in Carlsbad averages a daily high of 20.4°C with nights around 9.3°C. Expect roughly 4.6 wet days totalling 19.4mm. Comfortable conditions for being outdoors all day.
May in Carlsbad averages a daily high of 21.3°C with nights around 12.5°C. Expect roughly 3.6 wet days totalling 8.3mm. Comfortable conditions for being outdoors all day.
June in Carlsbad averages a daily high of 22.7°C with nights around 14.7°C. Rain is rare — about 1.5 wet days and 1.3mm across the month. Comfortable conditions for being outdoors all day.
July in Carlsbad averages a daily high of 25.1°C with nights around 16.9°C. Rain is rare — about 0.6 wet days and 1.7mm across the month. Comfortable conditions for being outdoors all day.
August in Carlsbad averages a daily high of 25.8°C with nights around 16.9°C. Rain is rare — about 0.7 wet days and 3.1mm across the month. Comfortable conditions for being outdoors all day.
September in Carlsbad averages a daily high of 25.6°C with nights around 15.2°C. Rain is rare — about 1.7 wet days and 3.5mm across the month. Comfortable conditions for being outdoors all day.
October in Carlsbad averages a daily high of 24.2°C with nights around 11.4°C. Expect roughly 4.3 wet days totalling 18mm. Comfortable conditions for being outdoors all day.
November in Carlsbad averages a daily high of 22°C with nights around 6.8°C. Expect roughly 5.3 wet days totalling 22.9mm. Comfortable conditions for being outdoors all day.
December in Carlsbad averages a daily high of 19.1°C with nights around 4.4°C. Expect roughly 6.9 wet days totalling 48.5mm. 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. Carlsbad peaks at 99.
Based on 30 years of records, April–October scores highest for comfort in Carlsbad, balancing daytime temperature against rainfall.
August is the warmest, averaging a daily high of 25.8°C.
February is the wettest, averaging 63.4mm of rain across roughly 8.4 wet days.
February is the coolest month, with average daily highs around 18.9°C.