Are Termites Active in Winter in California?
Termite activity can change with the season, but winter doesn’t rule out a termite problem. In California, subterranean termites can forage throughout the year, although their activity is generally lower during winter. Swarming also varies by termite type, location, and weather.
What happens to termites in winter?
Subterranean termites live in soil and may continue foraging for food. In California, foraging activity is typically minimal from November through February, then increases during other seasons. Drywood termites live inside wood above ground, so the absence of visible outdoor activity doesn’t tell you whether they’re present inside a structure.
Signs to watch for
A lack of swarmers in winter does not rule out termites. Look for possible signs such as mud tubes near the foundation, damaged or blistered wood, discarded wings, or drywood termite pellets near small openings in wood. These clues can have different causes or may need professional identification. A swarm outside the home also doesn’t automatically mean the structure is infested.
Is a winter termite inspection worthwhile?
If you’ve seen signs of activity, found unexplained wood damage, or have a history of termites at the property, you don’t need to wait for warmer weather to ask about an inspection. An inspector can assess visible evidence in accessible areas and explain whether further evaluation or treatment may be appropriate.
Reduce conditions around your home
Keep firewood and scrap lumber away from the house, avoid direct soil contact with untreated structural wood where practical, and address leaks or drainage problems. These steps can reduce conditions that may favor termite activity, though they can’t guarantee that termites are absent.
Learn more about what inspectors look for during a termite inspection or visit Killroy’s termite inspection and control services.