Castle Hill, CaliforniaWhen to Go
Best Time to Visit Castle Hill, California
Spring and fall give the best combination of mild weather and clear views; avoid mid-summer heat on exposed ridges.
Spring
Mar-May · 10-20°C
Wildflowers and comfortable temperatures; trails are at their greenest.
Fall
Sep-Nov · 12-22°C
Clearer skies and softer afternoon light-great for views of the Bay.
Winter
Dec-Feb · 6-15°C
Trail can be muddy; storms can close some paths.
Weather & Climate near Castle Hill, California
Climate
Castle Hill, California's climate is classified as Warm-Summer Mediterranean - Warm-Summer Mediterranean climate with warm summers (peaking in August) and cold winters (coldest in January). Temperatures range from 4°C to 28°C. Moderate rainfall (545 mm/year) with a pronounced dry season.
Air Quality:
AQI 32
Good
Temperature & Rainfall
Temperature Range
28°
Warmest Month
4°
Coldest Month
Monthly Conditions
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | 4° - 13° | 7° | 116 mm | - | - | 2.8 m/s | - | - |
| February | - | 6° - 15° | 11° | 97 mm | - | - | 3.1 m/s | - | - |
| March | - | 7° - 17° | 12° | 81 mm | - | - | 3.5 m/s | - | - |
| April | - | 8° - 20° | 14° | 34 mm | - | - | 3.8 m/s | - | - |
| May | - | 10° - 23° | 16° | 12 mm | - | - | 4.0 m/s | - | - |
| June | - | 12° - 26° | 19° | 3 mm | - | - | 4.2 m/s | - | - |
| July | - | 13° - 28° | 21° | 1 mm | - | - | 3.9 m/s | - | - |
| August | - | 13° - 28° | 21° | 2 mm | - | - | 3.6 m/s | - | - |
| September | - | 13° - 27° | 20° | 7 mm | - | - | 3.2 m/s | - | - |
| October | - | 10° - 24° | 17° | 30 mm | - | - | 2.8 m/s | - | - |
| November | - | 7° - 18° | 12° | 79 mm | - | - | 2.7 m/s | - | - |
| December | - | 4° - 13° | 7° | 83 mm | - | - | 2.7 m/s | - | - |
Getting There & Around
How to Get to Castle Hill, California
Castle Hill is accessible from Kensington and El Cerrito via local roads; the nearest major roadways are San Pablo Avenue and I‑80. Public transit: take BART to El Cerrito Plaza or North Berkeley and then a local bus or a 20-30 minute walk depending on the trailhead chosen.
Tips for Visiting Castle Hill, California
- Expect steep, uneven trails-best for hikers rather than casual stroller outings.
- Parking is limited-access via Redwood Road (CA-13) and local streets, or use BART to nearby El Cerrito Plaza and take a local bus or a 25-30 minute walk.
- Bring binoculars for birding; the hill is a good urban vantage for raptors and waterfowl.