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Carlsbad has a cold desert climate.
Long, dry summers. Real winter cold. Almost no rain — here's what that means in plain terms.
What this climate feels like
The four things a regular visitor actually wants to know:
Highs near 95°F in July. About 118 days a year above 90 °F.
Lows near 30°F in December. About 69 freezing nights a year.
About 12 in of rain a year. Wettest in September.
More sun than cloud through the year.
What "cold desert" means
Climate scientists sort every place on Earth into about 30 climate types, based on how hot, cold, wet and dry it is across the year. Carlsbad's type — cold desert — sits in the broad family of dry climates — deserts and steppes.
Researchers write climate types as a short letter code. Here is what each letter means:
Cities with the same climate as Carlsbad
A cold desert climate (BWk) — these recognizable cities share it. If you know one of them, you know roughly what to expect.
Has Carlsbad's climate type changed?
A climate type is a coarse bucket. It can hold steady for years while the weather inside it shifts — or tip into the next bucket.
What this climate means for you
Drought-tolerant natives only. Cold-hardy desert plants — sagebrush, juniper, hardy succulents — outperform exotics.
Spring and autumn are the comfortable shoulders. Winter is genuinely cold; summer is hot but dry.
Real winters and hot summers, but always dry. Heating in winter and AC in summer; humidity stays low year-round.
Where these numbers come from
The climate type and the month-by-month figures on this page are computed from Carlsbad's measured 30-year climate normals (1991–2020) — the same official records behind Carlsbad's main climate page, so the two always agree.
Long-range climate maps measure things slightly differently and can place a city in a neighbouring category. Where they differ, this page uses the measured station record as the climate today.
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Cavern City AP (NOAA GHCN station USW00093033), about 10 km from the city centre.