Cabo San Lucas, Mexico Climate & Monthly Averages
Cabo San Lucas has a tropical wet-and-dry climate. August is the hottest month, averaging 90° by day; January is the coldest at 78°.
Cabo San Lucas's climate runs on sunshine and sparse rain
Rain is the exception in Cabo San Lucas. The city collects about 11.3 inches (287 mm) across 28 wet days in a typical year, which leaves the sky clear for most of it - 11.3 hours of sunshine a day on average. Highs run from 78°F (26°C) in January to 90°F (32°C) in August.
What the dry climate changes
January bottoms out at 78°F (26°C) in daylight, 62°F (17°C) after dark. Warmth peaks in August: highs of 90°F (32°C), lows of 80°F (27°C). The gridded 2015-2024 daily record for this location tops out at 100°F (38°C) and bottoms at 50°F (10°C) - decade extremes, not all-time station records. September is the wettest month at 4.0 inches (102 mm) over 8 days; April is the driest.
8 months average under 20 mm of rain, the longest unbroken stretch running November through May. Relative humidity averages 60% across the year, drier than about 85% of the cities we track. Between the average August and the average January lie 8°C, a narrower spread than about 79% of the cities we track.
More climate facts for Cabo San Lucas
- Hottest month: August - highs near 90°F (32°C)
- Coldest month: January - highs near 78°F (26°C)
- Decade extremes (2015-2024): 100°F (38°C) high · 50°F (10°C) low
- Wettest month: September (8 rainy days) · Sunniest: July (12.7 h sun/day)
- Climate type: tropical wet-and-dry
- Annual swing: 8°C between the average warmest and coolest month · day to night: 8°C
- Months averaging 30°C or hotter: 5
- Average humidity: 60%
Heat, cold and scarce precipitation in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
When the dry weather is easiest to use
Avoiding the hardest heat or cold
December to April is the sweet spot for Cabo San Lucas - temperatures sit either side of the peak heat rather than in it. Expect 80°F (27°C) in the afternoon and around 1 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in December.
Prepare for sun and cooler nights
Pack for Cabo San Lucas with lightweight, breathable clothing and serious sun protection. August nights average 80°F (27°C), so evenings rarely match the afternoons.
Monthly heat and rainfall table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 78° | 62° | 1 | 0.2 in | 10.1 h/day | 10.9 h | 3% | 58% |
| February | 78° | 63° | 1 | 0.3 in | 10.4 h/day | 11.4 h | 3% | 58% |
| March | 81° | 65° | 0 | 0.0 in | 11.2 h/day | 12.0 h | 1% | 51% |
| April | 83° | 67° | 0 | 0.0 in | 12.1 h/day | 12.7 h | 0% | 48% |
| May | 86° | 70° | 0 | 0.0 in | 12.6 h/day | 13.2 h | 1% | 48% |
| June | 87° | 74° | 2 | 0.8 in | 12.6 h/day | 13.5 h | 5% | 57% |
| July | 91° | 79° | 3 | 0.7 in | 12.7 h/day | 13.4 h | 11% | 61% |
| August | 90° | 80° | 7 | 3.2 in | 11.7 h/day | 12.9 h | 24% | 70% |
| September | 89° | 79° | 8 | 4.0 in | 11.0 h/day | 12.2 h | 27% | 75% |
| October | 88° | 76° | 3 | 1.3 in | 11.0 h/day | 11.6 h | 10% | 66% |
| November | 84° | 70° | 2 | 0.6 in | 10.0 h/day | 11.0 h | 5% | 62% |
| December | 80° | 65° | 1 | 0.1 in | 9.8 h/day | 10.7 h | 2% | 61% |
How daytime heat and cool nights change by month
Each card shows the average high and low. The bar places that month between Cabo San Lucas's coldest night and warmest afternoon.
January
- Rain
- 1 day
- Sunshine
- 10.1 h
- Daylight
- 10.9 h
February
- Rain
- 1 day
- Sunshine
- 10.4 h
- Daylight
- 11.4 h
March
- Rain
- 0 days
- Sunshine
- 11.2 h
- Daylight
- 12.0 h
April
- Rain
- 0 days
- Sunshine
- 12.1 h
- Daylight
- 12.7 h
May
- Rain
- 0 days
- Sunshine
- 12.6 h
- Daylight
- 13.2 h
June
- Rain
- 2 days
- Sunshine
- 12.6 h
- Daylight
- 13.5 h
July
- Rain
- 3 days
- Sunshine
- 12.7 h
- Daylight
- 13.4 h
August
- Rain
- 7 days
- Sunshine
- 11.7 h
- Daylight
- 12.9 h
September
- Rain
- 8 days
- Sunshine
- 11.0 h
- Daylight
- 12.2 h
October
- Rain
- 3 days
- Sunshine
- 11.0 h
- Daylight
- 11.6 h
November
- Rain
- 2 days
- Sunshine
- 10.0 h
- Daylight
- 11.0 h
December
- Rain
- 1 day
- Sunshine
- 9.8 h
- Daylight
- 10.7 h
Looking for warmer alternatives? Browse warm places by month, or compare Cabo San Lucas's coolest part of the year: January, February, December.
Heat and cold across the Cabo San Lucas year
March through May
Through March through May, Cabo San Lucas brings hot afternoons: 83°F (29°C) by day, 67°F (20°C) after dark, and precipitation is essentially absent. Daylight is generous - around 12.0 hours of sun a day.
June through August
June through August runs hot here - highs near 89°F (32°C), nights near 78°F (26°C), and rain comes on about 12 days over the three months. Daylight is generous - around 12.3 hours of sun a day.
September through November
September through November in Cabo San Lucas brings hot afternoons, with daytime highs averaging 87°F (31°C) and nights around 75°F (24°C); rain comes on about 12 days over the three months. Daylight is generous - around 10.7 hours of sun a day.
December through February
Through December through February, Cabo San Lucas brings comfortable warmth: 79°F (26°C) by day, 63°F (17°C) after dark, and precipitation is sparse, near 17 mm (0.7 in) for the season. Daylight is generous - around 10.1 hours of sun a day.
How unusual is Cabo San Lucas?
- The city sees 11.3 hours of sunshine on an average day - sunnier than any other city in our 3496-city dataset.
- 75% of the year's precipitation falls in its wettest three months - more seasonal than any other city in our 3496-city dataset.
- Rain or snow reaches the ground on 28 days a year - fewer wet days than all but 4% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.