diff --git a/storage/remote/otlptranslator/prometheusremotewrite/metrics_to_prw.go b/storage/remote/otlptranslator/prometheusremotewrite/metrics_to_prw.go
index 90f84ef2f1..79d127bb80 100644
--- a/storage/remote/otlptranslator/prometheusremotewrite/metrics_to_prw.go
+++ b/storage/remote/otlptranslator/prometheusremotewrite/metrics_to_prw.go
@@ -99,8 +99,11 @@ func (c *PrometheusConverter) FromMetrics(ctx context.Context, md pmetric.Metric
 				}
 
 				if hasTemporality &&
-					(temporality == pmetric.AggregationTemporalityUnspecified ||
-						(!settings.AllowDeltaTemporality && temporality == pmetric.AggregationTemporalityDelta)) {
+					// Cumulative temporality is always valid.
+					// Delta temporality is also valid if AllowDeltaTemporality is true.
+					// All other temporality values are invalid.
+					!(temporality == pmetric.AggregationTemporalityCumulative ||
+						(settings.AllowDeltaTemporality && temporality == pmetric.AggregationTemporalityDelta)) {
 					errs = multierr.Append(errs, fmt.Errorf("invalid temporality and type combination for metric %q", metric.Name()))
 					continue
 				}