Weather in Sacramento in August

A hard month. August is a hard month in Sacramento, and worth planning around. Daytime highs average 36.7 °C and the afternoon is not negotiable — outdoor plans move to early morning or evening.

August ranks 11 of 12 — near the bottom of Sacramento's year. May is the month that works, and the swing between the two is 63 points, which is a different holiday rather than a slightly better one.

Rain is not a factor worth planning around this month. Pack for heat management rather than style: shade, water, and a schedule that gives up on the middle of the day.

What the averages hide

Averages flatten a month, and this one hides a few things: 21 days of the month clear 35 °C — that is not a heatwave, it is the month; the day swings 20 °C from low to high, which means one bag has to cover both. Across the twenty years measured, the hottest August day reached 45.3 °C and the coldest night fell to 11.9 °C.

August is dependably dry, and that reliability is the point: across the twenty years measured, the wettest August on record still only managed 13 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Augusts brought 5 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 8.3 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 42%.

How August sits in the year

Temperatures hold steady either side: 37.6 °C in July, 36.7 here, 33.8 in September. Nothing about the timing within the month matters much.

Daylight in August

13.7 hours of daylight, losing 1.1 hours across the month. That is between Sacramento's extremes of 14.8 and 9.5 hours, so days are long enough not to constrain the plan.

An inland climate

With no coast nearby, the year swings a fair way — 31.9 °C between the warmest afternoons and the coldest nights, wider than any coastal city at this latitude would manage. Within August itself the daily swing is 20 °C, so mornings and afternoons need different clothes.

How busy it gets

Shoulder. The value months — prices ease off and you get the place closer to itself.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

August in Sacramento versus nearby

If Sacramento is one option among several, the nearby comparison is worth making. Napa is a better bet in August — 2.9 °C cooler, the same number of rain days. San Francisco is a better bet in August — 13.1 °C cooler, the same number of rain days.

So: August is a compromise. May is 45 points better and is what Sacramento is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Sacramento

See all twelve months in Sacramento, or where else to go in August.