# Irvine, California Weather: A Month-by-Month Guide
Irvine, California, is renowned for its incredibly pleasant Mediterranean climate. Situated in Orange County, it boasts sunshine for the majority of the year, making it a desirable location for residents and visitors alike. But while generally mild, Irvine’s weather *does* vary throughout the year. This comprehensive guide breaks down the typical weather conditions month by month, helping you plan your visit or simply understand what to expect in this beautiful Southern California city.
## **January: Coolest Month with Occasional Rain**
January represents Irvine’s coolest period. Temperatures typically range from a high of 66°F (19°C) to a low of 46°F (8°C). Rainfall is more frequent than in other months, though typically occurring in short bursts rather than prolonged downpours. Expect around 2-3 inches of rain throughout the month. It's a good time for hiking when the trails aren't crowded, but pack layers!
## **February: Similar to January, with Increasing Sunshine**
February continues the trend of cooler temperatures, mirroring January with highs around 67°F (19°C) and lows around 47°F (8°C). However, you'll notice a subtle increase in sunshine hours. Rainfall remains possible, averaging around 2 inches for the month. Whale watching season is in full swing, offering a fantastic outdoor activity.
## **March: Transitioning to Spring**
March marks a noticeable shift towards spring. Temperatures begin to climb, with average highs reaching 70°F (21°C) and lows around 50°F (10°C). Rainfall decreases significantly, making it a more reliable month for outdoor activities. Wildflowers start to bloom, adding color to the landscape.
## **April: Pleasant and Mild**
April is a truly delightful month in Irvine. The weather is consistently pleasant, with average highs of 74°F (23°C) and lows of 54°F (12°C). Rainfall is minimal, usually less than an inch. This is an ideal time to explore Irvine’s parks, beaches, and outdoor attractions.
## **May: Warm Days and Cool Evenings**
May brings warmer days and comfortably cool evenings. Average highs climb to 77°F (25°C), with lows around 58°F (14°C). The "May Gray" phenomenon – morning cloud cover that burns off by afternoon – is common, but doesn't detract significantly from the sunshine. Beach days are becoming increasingly popular.
## **June: Officially Summer!**
June officially kicks off summer in Irvine. Temperatures continue to rise, with average highs of 81°F (27°C) and lows of 62°F (17°C). Sunshine is abundant, and humidity remains relatively low. It’s a perfect time for outdoor events, concerts, and enjoying the coastal breeze.
## **July: Hottest Month of the Year**
July is typically the hottest month in Irvine, with average highs reaching 84°F (29°C) and lows around 64°F (18°C). While temperatures can occasionally exceed 90°F (32°C), the coastal influence usually keeps things manageable. Be sure to stay hydrated and seek shade during peak hours.
## **August: Continued Warmth**
August is very similar to July, maintaining warm temperatures with average highs of 83°F (28°C) and lows of 64°F (18°C). The ocean temperature is at its warmest, making it ideal for swimming and water sports.
## **September: Still Warm, with a Hint of Fall**
September offers a sweet spot – still warm enough for beach activities, but with a subtle shift towards fall. Average highs are around 81°F (27°C), and lows dip to 63°F (17°C). The marine layer can be more persistent in the mornings.
## **October: Beautiful Fall Weather**
October is arguably one of the best months to visit Irvine. The weather is consistently beautiful, with average highs of 77°F (25°C) and lows around 59°F (15°C). Rainfall is still minimal, and the humidity is low. Pumpkin patches and fall festivals add to the seasonal charm.
## **November: Mild and Comfortable**
November continues the mild and comfortable trend, with average highs of 72°F (22°C) and lows around 54°F (12°C). Rainfall begins to increase slightly, but is still relatively infrequent. Thanksgiving is a lovely time to enjoy the outdoors.
## **December: Cool and Festive**
December brings cooler temperatures, with average highs of 66°F (19°C) and lows around 47°F (8°C). Rainfall is moderate, averaging around 2 inches. The city is beautifully decorated for the holidays, creating a festive atmosphere.
## **Irvine Weather by Month: A Quick Reference Table**
| Month | Avg High (°F) | Avg Low (°F) | Avg Rainfall (inches) |
|-----------|---------------|--------------|-----------------------|
| January | 66 | 46 | 2.0 - 3.0 |
| February | 67 | 47 | ~2.0 |
| March | 70 | 50 | ~1.5 |
| April | 74 | 54 | <1.0 |
| May | 77 | 58 | ~0.5 |
| June | 81 | 62 | ~0.2 |
| July | 84 | 64 | ~0.1 |
| August | 83 | 64 | ~0.1 |
| September | 81 | 63 | ~0.3 |
| October | 77 | 59 | ~0.7 |
| November | 72 | 54 | ~1.0 |
| December | 66 | 47 | ~1.5 |
## **Frequently Asked Questions (FAQ)**
**Q: What is the rainiest month in Irvine?**
A: January is typically the rainiest month.
**Q: Does Irvine get snow?**
A: No, snow is extremely rare in Irvine.
**Q: What is the average humidity in Irvine?**
A: Irvine generally has low humidity, averaging around 60-70%.
**Q: Is Irvine windy?**
A: Irvine can experience moderate winds, especially in the afternoons and evenings, due to the coastal location.
**Q: What should I pack for a trip to Irvine?**
A: Layers are key! Even in summer, evenings can be cool. Pack sunscreen, a hat, sunglasses, comfortable walking shoes, and a light jacket.
## **Resources**
* **National Weather Service - Irvine:** [https://www.weather.gov/sgx/](https://www.weather.gov/sgx/)
* **AccuWeather - Irvine:** [https://www.accuweather.com/en/us/california/irvine/92618/daily-weather-forecast/349355](https://www.accuweather.com/en/us/california/irvine/92618/daily-weather-forecast/349355)
* **City of Irvine Official Website:** [https://cityofirvine.org/](https://cityofirvine.org/)
* **Visit Irvine:** [https://www.visitirvine.com/](https://www.visitirvine.com/)
* **U.S. Climate Data - Irvine:** [https://www.usclimatedata.com/climate/california/united-states/33.6863/-117.8258](https://www.usclimatedata.com/climate/california/united-states/33.6863/-117.8258)
