Newport Beach, California climate: Normal weather by month, frost dates and records
Newport Beach's normal year runs from 50°F December nights to 73°F August afternoons, with 9.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.1°C, December lows of 10°C, August highs of 23°C, 240 mm of precipitation a year.
- NOAA stationNewport Beach Harbor
- Station IDUSC00046175
- Location33.60°N 117.88°W
- Elevation10 ft (3 m)
- From the centerunder 1 mile
- Population82,970
On October 14, the normal high in Newport Beach is 73°F and the normal low 61°F, and the chance of measurable rain or snow is 6%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Newport Beach.
- Jan 65° 50°
- Feb 63° 51°
- Mar 65° 53°
- Apr 66° 55°
- May 67° 58°
- Jun 68° 62°
- Jul 72° 65°
- Aug 73° 66°
- Sep 74° 64°
- Oct 73° 60°
- Nov 68° 55°
- Dec 64° 50°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Newport Beach each month?
August is the warmest month, with normal highs of 73°F; December the coldest, with normal lows of 50°F. The most precipitation falls in February (2.38 in), the least in August (0.00 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 65°F | 50°F | 57.4°F | 2.20 | 6 | <1 | <1 | 10 h 10 min |
| February | 63°F | 51°F | 57.2°F | 2.38 | 7 | <1 | <1 | 11 h |
| March | 65°F | 53°F | 58.9°F | 1.34 | 5 | <1 | <1 | 12 h |
| April | 66°F | 55°F | 60.5°F | 0.55 | 3 | <1 | <1 | 13 h |
| May | 67°F | 58°F | 62.5°F | 0.18 | 2 | <1 | <1 | 13 h 50 min |
| June | 68°F | 62°F | 64.9°F | 0.07 | 1 | <1 | <1 | 14 h 20 min |
| July | 72°F | 65°F | 68.2°F | 0.02 | 1 | <1 | <1 | 14 h 10 min |
| August | 73°F | 66°F | 69.4°F | 0.00 | <1 | <1 | <1 | 13 h 30 min |
| September | 74°F | 64°F | 69.1°F | 0.10 | 1 | <1 | <1 | 12 h 30 min |
| October | 73°F | 60°F | 66.5°F | 0.33 | 2 | <1 | <1 | 11 h 20 min |
| November | 68°F | 55°F | 61.4°F | 0.64 | 3 | <1 | <1 | 10 h 30 min |
| December | 64°F | 50°F | 57.0°F | 1.62 | 6 | <1 | <1 | 10 h |
| Year (annual) | 68°F | 57°F | 62.8°F | 9.43 | 35 | 1 | <1 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 18°C | 10°C | 14.1°C | 56 mm |
| February | 17°C | 11°C | 14.0°C | 60 mm |
| March | 18°C | 12°C | 14.9°C | 34 mm |
| April | 19°C | 13°C | 15.8°C | 14 mm |
| May | 19°C | 15°C | 16.9°C | 5 mm |
| June | 20°C | 16°C | 18.3°C | 2 mm |
| July | 22°C | 18°C | 20.1°C | 1 mm |
| August | 23°C | 19°C | 20.8°C | 0 mm |
| September | 23°C | 18°C | 20.6°C | 3 mm |
| October | 23°C | 16°C | 19.2°C | 8 mm |
| November | 20°C | 13°C | 16.3°C | 16 mm |
| December | 18°C | 10°C | 13.9°C | 41 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046175; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Newport Beach?
Normal highs sit between 65°F and 85°F in April, May, June, July, August, September, October and November. Of those, August has the fewest days with rain (0).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046175.
What hardiness zone is each Newport Beach ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Newport Beach's 6 ZIP code areas are all in zone 10b. Each ZIP's frost dates are in the frost tool.
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Newport Beach?
In a normal year in Newport Beach, 1 day a year reaches 90°F, nights almost never fall to freezing and 35 days bring measurable precipitation.
- Days at 90°F or more
- 1a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- fewer than 1a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 35a normal year
The highest temperature in this station's record (since 1921) is 107°F, on September 26, 1963; the lowest is 29°F, on January 22, 1937.
The wettest calendar year on that record is 1978, with 27.90 in.
Source: NOAA NCEI 1991-2020 annual normals, station USC00046175; records: ACIS (NOAA Regional Climate Centers), station USC00046175. Records use complete months only; a month missing more than three days is left out.
How sunny is Newport Beach?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Newport Beach, 5.4 kWh per square metre a day. August is the sunniest month (92%) and February the cloudiest (83%). Among the 459 U.S. places of 50,000 or more, that ranks tied 58th (with 22 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.3 |
| February | 83% | 4.1 |
| March | 85% | 5.4 |
| April | 86% | 6.5 |
| May | 83% | 6.9 |
| June | 85% | 7.3 |
| July | 89% | 7.4 |
| August | 92% | 7.0 |
| September | 91% | 6.0 |
| October | 88% | 4.6 |
| November | 87% | 3.6 |
| December | 83% | 2.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Newport Beach need?
A normal year in Newport Beach brings 1,318 heating degree days, 75% fewer than the median U.S. place (5,373), and 509 cooling degree days, 44% fewer than the median (908). No month reaches 300 heating degree days. For gardens and crops, NOAA counts 4,668 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 238 | 4 |
| February | 222 | 2 |
| March | 193 | 4 |
| April | 141 | 6 |
| May | 88 | 10 |
| June | 30 | 28 |
| July | 4 | 103 |
| August | 2 | 138 |
| September | 2 | 125 |
| October | 25 | 70 |
| November | 122 | 15 |
| December | 251 | 2 |
| Year (annual) | 1,318 | 509 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00046175. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Newport Beach been warmer than normal lately?
2025 averaged 62.6°F, 0.2°F below the 1991-2020 normal of 62.8°F. 0 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.1°F | −0.6°F | 5.91 |
| 2023 | 62.1°F | −0.6°F | 17.81 |
| 2024 | 62.2°F | −0.6°F | 11.55 |
| 2025 | 62.6°F | −0.2°F | 13.64 |
Over 69 complete years from 1925 to 2025, the station's annual mean temperature rose at a fitted 4.9°F per century (+0.27°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00046175; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Newport Beach's climate compare?
Newport Beach is warmer than 142 of the other 218 places with their own NOAA record in California, and wetter than 39. Across the 7,247 U.S. stations with normals, its annual mean of 62.8°F is warmer than 82%.
In the Köppen classification computed from these normals, Newport Beach is BSk: cold semi-arid steppe. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Questions about Newport Beach's climate
What is the coldest month in Newport Beach?
December, with a normal high of 64°F and a normal low of 50°F. The warmest is August (73°F by day, 66°F at night).
Does it snow in Newport Beach?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Newport Beach?
February, with 2.38 in of precipitation in a normal year; the driest is August with 0.00 in.
What plant hardiness zone is Newport Beach in?
The USDA's 2023 map puts Newport Beach in zone 10b across its 6 ZIP code areas (10b in 92660, the largest). By the same method at Newport Beach's NOAA station, the coldest night of a typical year reaches 40°F (24 years, 1991-2020): zone 11a.
Nearby and next
- Newport Beach in OctoberThis month day by day, its records and recent years
- California climateThe statewide normals and every place in the state
- Santa Ana, CA6 miles from this station, 64.9°F a year
- Laguna Beach, CA7 miles from this station, 63.1°F a year
- Santa Ana Fire Station, CA10 miles from this station, 66.1°F a year
- Tustin, CA10 miles from this station, 64.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made