Amazon S3 to PostgreSQL integration

Connect Amazon S3 to PostgreSQL and automatically sync your cloud data warehouse data.

Get started free Amazon S3 connector

Amazon S3

Data source

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Ready to connect

CONNECTOR SOURCE

Amazon S3 to PostgreSQL

Connect Amazon S3 to PostgreSQL and automatically sync your cloud data warehouse data. Weld extracts Tables, Views, Schemas, and Databases from Amazon S3, loads them into PostgreSQL, and lets you transform the data using SQL or dbt, no custom scripts required.

Everything you need to get started

Amazon S3

Setup guide Connector page

PostgreSQL

Setup guide Connector page

Weld Connect API

Set up programmatically

Use the Weld Connect REST API to create Amazon S3 connections, configure ELT syncs, and manage pipelines entirely through code. Built for embedding, automation, and CI/CD workflows.

Explore Weld Connect API reference

POST/elt_syncs

# Create a Amazon S3 ELT sync
curl -X POST https://connect.weld.app/elt_syncs \
  -H "x-api-key: $API_KEY" \
  -d '{
    "connection_id": "conn_abc123",
    "integration_id": "aws-s3",
    "destination_schema_name": "aws-s3_data",
    "sync_interval": "0 * * * *"
  }'
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FAQs

How do I sync Amazon S3 data to PostgreSQL?

Sign up for Weld, connect Amazon S3 as a source and PostgreSQL as a destination. Weld handles the extraction, loading, and lets you transform data using SQL or dbt.

What Amazon S3 data can I sync to PostgreSQL?

You can sync Tables, Views, Schemas, and Databases. The available objects depend on your Amazon S3 account permissions and configuration.

How often does Weld sync data from Amazon S3?

Sync frequency depends on your Weld plan. Schedules range from every 5 minutes to daily intervals. Each sync processes only new and changed data.

Can I transform Amazon S3 data before it lands in PostgreSQL?

Yes. Weld supports SQL-based transformations in the platform and integrates with dbt Cloud. You can clean, join, and model your data before analysis.

Is the Amazon S3 to PostgreSQL integration secure?

Yes. Weld encrypts all data in transit and at rest, is SOC 2 Type II certified, and supports IP whitelisting. Credentials are stored encrypted and never logged.