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California Wine Atlas

San Diego County

County

Heat class V · 1991-2020 normals

Climate normals in three numbers

4,141°F-days

, Apr 1 – Oct 31

686 GridMET cells cover this region

V

72mm

season rain, Apr 1 – Oct 31

24 mm of it in the , Sep 1 – Oct 31

Warm and cool vintages since 1980

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Rain across the season, and at harvest

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The boundary

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Hovering a shaded region names it; a click opens its page.

Measured vineyard area

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Drought categories, year by year

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What's in the ground

6.5

pH, 1:1 water

9.4cm

, whole profile

88cm

to

Well drained

, dominant condition

Distribution across 344 · mean ◆, median │, p10–p90 bar

6.5
1.4%
14.5%
available water
9.4cm
depth to restriction
88cm

Dominant

  • 17.0%
  • 6.8%
  • 6.2%
  • 5.5%
  • 5.3%

344 map units · soil described over 68.3% of the region’s area · 18.0% is water, rock outcrop or other non-soil · 78% of the described area has a restrictive layer within the profile.

Sand, silt and clay, against every other appellation

CLAYSANDSILT

Sandy loam

61% sand · 24% silt · 14% clay

Sandier than 91% of California appellations and clayier than 9%. Each grey point is one appellation’s topsoil; appellations nest, so this is a distribution of places rather than of land.

Plus 9% rock fragments by volume, which the triangle does not describe — the three fractions are of the fine-earth material only.

Elevation, slope and aspect

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Bearing acreage by variety

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Price per ton

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