---
title: "NOWA (Norwegian Overnight Weighted Average)"
method: GET
path: "/api/v1/norges-bank/nowa"
tags: ["Central Banks & Monetary"]
---

# NOWA (Norwegian Overnight Weighted Average)

`GET /api/v1/norges-bank/nowa`

NOWA is the volume-weighted average of unsecured overnight interbank lending in Norwegian kroner. Published at T+1: observations labelled with date N reflect activity on the previous banking day (N-1). History since 2011. Migrated from IR to SHORT_RATES dataflow on 2023-12-01.

## Query parameters

- `last_n` integer — Return last N observations per series.

## Response `200`

Time series of NOWA and related short-rate indices.

- EnvelopeListNorgesBankShortRatesDatum
  - `data` NorgesBankShortRatesDatum[], required
    - `DECIMALS` string, nullable — Number of decimal places reported by the source.
    - `COLLECTION` string, nullable — SDMX collection indicator (e.g. end-of-period, average).
    - `UNIT_MULT` string, nullable — SDMX unit multiplier code (0 = units, 3 = thousands, 6 = millions).
    - `CALCULATED` string, nullable — Flag indicating whether the value is calculated or directly observed.
    - `CALC_METHOD` string, nullable — Calculation method code for observation-level attributes.
    - `FREQ` string, required — Frequency code (D/M/A).
    - `FREQ_name` string, required — Frequency label.
    - `INSTRUMENT_TYPE` string, required — Short-rate instrument type (NOWA etc.).
    - `INSTRUMENT_TYPE_name` string, required — Instrument type label.
    - `TENOR` string, required — Tenor code (ON=overnight, TN, etc.).
    - `TENOR_name` string, required — Tenor label.
    - `UNIT_MEASURE` string, required — Unit of measure (R=rate, V=volume, I=index).
    - `UNIT_MEASURE_name` string, required — Unit of measure label.
    - `TIME_PERIOD` string, required — Observation period.
    - `value` union — Observation value.
      - number
      - integer
      - string
  - `meta` SugraMeta, required — Metadata attached to every /api/v1/* response envelope.
    - `endpoint` string, required — Requested endpoint path.
    - `data_time` string, required — ISO 8601 UTC timestamp of the source data, not of the request.
    - `response_time` string, required — ISO 8601 UTC timestamp when this response was produced.
    - `provider` string, required — API name and version.
    - `source` string, nullable — Identifier of the primary upstream source used for this response.
    - `attribution` string, nullable — Human-readable attribution mandated by an upstream source (e.g. a securities regulator or self-regulatory organization). Present only on responses whose source requires the owner and source to be clearly identified. Do not remove or alter it when using the response.
    - `fallback_used` boolean, nullable — True when the primary source failed and a fallback produced the data.
    - `fallback_chain` string[], nullable — Ordered list of sources attempted, in the order they were tried.
    - `cached` boolean, nullable — True when this response was served from the internal cache.
    - `stale` boolean, nullable — True when the cached response was returned after the upstream rate-limited or errored. Clients can use this to detect degraded data.

## Other responses

- `401` — Missing or invalid `x-api-key` header.
- `422` — Validation Error
- `429` — Daily rate limit exceeded. Check `X-RateLimit-Reset` for the next window.
- `503` — Upstream source is temporarily unavailable. Retry after a short delay.

---

[API](https://skmtc.net/sugra/apis/sugra-api.md) · [All operations](https://skmtc.net/sugra/apis/sugra-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/sugra/sugra-api/versions/4e2740743eb4/schema)