Sunnyvale weather in November
In November, Sunnyvale has daytime highs averaging 18 °C, nights around 9.7 °C, with 5.8 wet days, and a sea temperature of 13 °C. Figures are 1991–2020 climate normals.
- 18.0°C Average high
- 9.7°C Average low
- 5.8days Wet days
- 58mm Rainfall
- 13.4°C Sea temperature
- 10h Daylight
Daily temperatures through November
How November develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 November | 20.0 °C | 11.1 °C | 18 % |
| 11–20 November | 18.0 °C | 9.8 °C | 18 % |
| 21–30 November | 16.1 °C | 8.2 °C | 23 % |
- Average highs fall from 20.0 °C early in November to 16.1 °C by the end of it.
What to expect
| Measure | Typical November | Share of the month |
|---|---|---|
| Days above 25 °C | 1.3 of 30 | 4 % |
| Days above 30 °C | 0 of 30 | 0 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 5.8 of 30 | 19 % |
Conditions in November
| Measure | Average |
|---|---|
| Mean temperature | 13 °C |
| Record high (1991–2020) | 29 °C |
| Record low (1991–2020) | 1.9 °C |
| Relative humidity | 74 % |
| Wind speed | 11 km/h |
| Cloud cover | 47 % |
November compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| January | 14.6 °C | 121 mm | 58 % |
| September | 27.4 °C | 2 mm | 21 % |
| October | 23.8 °C | 29 mm | 31 % |
| November | 18.0 °C | 58 mm | 47 % |
| December | 14.2 °C | 116 mm | 55 % |
See all twelve months for Sunnyvale
- November is the 8th warmest month here.
- It is the 8th driest month of the year.
- It ranks 7th for least cloud cover.
- Days last about 10 hours from sunrise to sunset.
- It rains on 5.8 of 30 days — 19 % of the month.
- Nights are about 8.3 °C cooler than the middle of the day.
- The hottest November day on record since 1991 reached 29 °C, 11 °C above the usual daytime high.
- Beach score: 33 / 100 — see how this is calculated.
QuestionsNovember in Sunnyvale, answered
How warm is Sunnyvale in November?
Daily highs average 18 °C and nights fall to about 9.7 °C, a spread of 8.3 °C between afternoon and dawn. That makes November the 8th warmest month of the year here.
Does it rain much in Sunnyvale in November?
November averages 58 mm of rain, spread over about 6 of the 30 days — 19 % of the month. Cloud cover averages 47 % of the sky.
Is the sea warm enough to swim in November?
The sea averages 13 °C off Sunnyvale in November. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in November?
Sunnyvale averages 10 hours between sunrise and sunset in November. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.