What is the weather like in San Diego in March?

Expect temperatures between 10°C and 18°C with 16% average rain probability and about 8 hours of sunshine daily.

What is the weather like in San Diego in March?

San Diego in March scores 67/100 based on 30 years of climate data. Very good conditions overall.

Who should visit San Diego in March?

March in San Diego is ideal for: Outdoor enthusiasts, Photographers, Cultural tourists, Honeymoon couples, Business travelers.

San Diego Weather in March | 30-Year Forecast

Avg High

18°C

Hottest around day 29

Avg Low

10°C

Coolest around day 1

Rainy Days

0days

16% avg rain chance

Sunshine

8hrs/day

Spring season

Sea Temperature in March

Coastal Waters(Ocean)

15.5°C

Monthly Average

Water Feel

💧Refreshing

Consider a wetsuit for extended swimming

Swim Rating

🏄Cool, wetsuits recommended

Based on average sea surface temperature

Body of Water

Coastal Waters

Ocean

San Diego coastline

Essential Travel Info for San Diego

🗓️ Best Time to Visit 📖 Travel Guide 🍴 Food Guide

Currency

USD

$ United States dollar

Language

English

Driving

Right side

Connect

The most common area code for San Diego ...

Safety

Moderate Safety

GPI: 2.44

Travel Intelligence

Exclusive flight analytics & health data for San Diego

Smart Flight Estimator

Airport-to-Airport Logistics

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Add your home location in settings to see airport details.

Flight Connectivity Analysis

Airport traffic data & seasonal patterns

Well Connected

70/ 100

Traffic Index

Popular destination

Peak Daily Arrivals

slots per day

Peak

May

Low

Nov

Monthly Traffic Distribution

296

Jan

307

Feb

335

Mar

382

Apr

447

May

341

Jun

328

Jul

357

Aug

334

Sep

312

Oct

281

Nov

316

Dec

Traffic Level

Low Season

Key Connections

San Francisco (SFO)

Las Vegas McCarran (LAS)

Phoenix Sky Harbor (PHX)

Denver (DEN)

San Jose Norman Y. Mineta (SJC)

Health & Safety Advisory

CDC travel health recommendations

No Requirements

No Special Vaccinations Required

Standard travel precautions apply

Source: CDC Travelers' Health

View Complete Health Guide

Is March a Good Time to Visit San Diego?

👍Very good conditions overall(67/100)

Short Answer

San Diego in March features 15.5°C seas - too cold for swimming but stunning for coastal walks. Air temperatures average 18°C with 16% rain probability.

Decision Factors

Cold sea - swimming challenging

15.5°C sea temperature - Polar Plunge

Plenty of sunshine

10h of sunshine daily

Shoulder season - balanced conditions

75% of peak - good value with moderate crowds

Exceptional dining scene

34 Michelin-listed restaurants

Good For

🥾
Outdoor enthusiasts
Ideal hiking conditions: 17.7°C, 16% rain chance
📸
Photographers
10h sunshine, 52% clear skies for golden hour shots
🏛️
Cultural tourists
Comfortable conditions for exploring museums and sites
💑
Honeymoon couples
Wedding score 97/100 with romantic weather conditions
💼
Business travelers
Climate-controlled meetings unaffected by weather

Who Should Avoid

🏖️
Beach lovers
Sea temperature only 15.5°C - too cold for comfortable swimming
👴
Elderly travelers
77% humidity creates difficult conditions

"According to 30YearWeather's analysis of 30 years of NASA POWER satellite data,San Diego in March averages 18°C with 16% precipitation probability."

📊 Source: 30YearWeather.com🛰️ Data: NASA POWER (1991-2021)View Methodology →

Frequently Asked Questions: San Diego in March

What are the temperatures in San Diego in March?

Daytime highs average 18°C, nights drop to 10°C. Temperatures remain fairly consistent.

How many rainy days in San Diego in March?

Expect around 0 days with measurable rainfall. Rain is unlikely to disrupt plans.

What to wear in San Diego in March?

Layers are key. A medium-weight jacket and closed-toe shoes.

Is March peak season in San Diego?

This is typically peak season with higher prices. Book 2-3 months ahead.

San Diego Weather in March