Underwater Welder Salary in California 2026,
$58,060 Median | BLS Data by City

The published California figure is $58,060 a year, or $27.91 an hour, per BLS OEWS May 2025 — 8.0% above the national median of $53,750. That is the whole welding trade, dominated by topside work, because BLS publishes no underwater welding series. The band runs $44,520 at the 10th percentile to $81,940 at the 90th, and commercial diving pay is structured differently from all of it.

No. There is no underwater welding occupational series at any level of the BLS system, and no California commercial diving wage row is published either. This page uses SOC 51-4121, Welders, Cutters, Solderers and Brazers, which is the closest defensible match and is overwhelmingly composed of topside fabrication and structural welders. Anyone quoting a precise underwater welding salary is not quoting BLS. Use the $58,060 median as the welding trade baseline and treat commercial diving compensation as a separate, project-based question.

California licenses nothing here, so the requirements come from elsewhere. Commercial diving performed as employment in this state falls under Cal/OSHA's commercial diving standards, which govern crew composition, equipment and procedures. The Association of Diving Contractors International certification is the recognised commercial diving credential that employers screen on, obtained through a commercial diving school. Underwater welding procedure qualification runs through the AWS D3.6M specification. A diver-welder needs the diving credential and the welding qualification, and the diving side is the harder and more expensive to obtain.

San Francisco-Oakland-Fremont at $64,320, then San Jose-Sunnyvale-Santa Clara $64,140, Vallejo $63,860, Napa $62,890 and San Diego-Chula Vista-Carlsbad $62,560. The whole table spans under two thousand dollars, which is very tight — and for underwater work specifically the relevant geography is the naval and port complexes at San Diego, the Bay Area and Long Beach rather than the general welding market.

It is a small market with real barriers and real risk, and the honest answer depends on appetite for both. The work exists — port and harbour maintenance, ship repair at the naval and commercial yards, bridge and pier structures — but the number of employers is small, entry requires commercial diving school and ADCI certification at meaningful cost, and Cal/OSHA's diving standards mean the work is tightly regulated for good reason. Anyone considering it should first become a genuinely competent topside welder, which is the base the $58,060 median describes, and treat diving as an addition to that rather than an alternative.

Because the alternative is inventing one. The occupational classification system has no underwater welding category, and the nearest adjacent code, commercial divers, is not published for California at a level this page can rely on. SOC 51-4121 is the defensible choice: it captures the welding competence that underwater welding is built on, it is a real California observation, and its limits can be stated plainly. What it cannot do is describe commercial diving compensation, which is paid through day rates, depth and mixed-gas premiums, mobilisation and project structures rather than as an annual wage. Naming that gap is more useful than papering over it with a number nobody publishes.

It is the wrong population for the job title, and deliberately so. About 26,060 California welders are counted here, almost all of them working on shore in fabrication, structural, pipe and manufacturing settings. Underwater welder-divers are a tiny specialty within a different labour market, employed by a small number of marine contractors. The band from $44,520 to $81,940 describes the topside trade accurately. Read it as the floor a diver-welder builds from and as evidence about the welding skills market in California, not as a statement about what diving pays.

Certification and process range first — pipe, structural and code welding qualifications are what separate the $48,480 quarter-point from the $70,400 seventy-fifth percentile in the topside trade. Sector second: shipyard, refinery, utility and industrial maintenance work pays above general fabrication, and California's naval and port complexes are where marine welding concentrates. Diving credentials third, for anyone taking the underwater route — ADCI certification and AWS D3.6M procedure qualification, obtained through commercial diving school. And supervision fourth, since dive supervisor and welding foreman roles are where the responsibility and the pay both sit.